ファイルフォーマット一覧

出典: フリー百科事典『ウィキペディア（Wikipedia）』

ファイルフォーマット一覧は、コンピュータなどの情報機器で使用されるファイルフォーマットと、その拡張子の一覧である。

ただし、各ファイルには拡張子は必ずしも必須ではなく、また拡張子は実際のファイルフォーマット（正確には各ファイルの内部のデータ形式）に必ずしも対応しているわけではないため、当一覧はあくまで参考である。

ウィキブックスに拡張子ハンドブック関連の解説書・教科書があります。

一覧[編集]

  • pkpass下表は「拡張子」順です。各項目（各列）順に表示するには、各項目名のソート記号をクリックしてください。
拡張子 説明 主な使用ソフトウェア 種類
###
 テンポラリーファイル 各プログラムに依存
#24
 プリンターデータ LocoScript
#IB
 プリンターデータ LocoScript
#nn
 ファイルイメージの一部 Long
#SC
 プリンターデータ LocoScript
#ST
 プリンター定義 LocoScript
$$$
 OS/2アーカイブファイル (例： archives.$$$, keys.$$$) OS/2 アーカイブ
$$$
 テンポラリーファイル
$?
 ZX Spectrumファイル
$00
 パイプファイル DOS
$DB
 テンポラリーファイル dBASE IV
$ED
 エディターのテンポラリーファイル MS C
$O1
 パイプファイル DOS
$VM
 バーチャルマネージャのテンポラリーファイル Windows 3.x
)2(
 LHAのテンポラリーファイル LHA
 ??$
 バックアップファイル P-CAD
 ??_
 Microsoftのパック化ファイル Expand アーカイブ
?DK
 ディスクイメージ Loaddskf.exe アーカイブ
?UT
 非パックのFTNメール FTN software
!ut
 未完成のµTorrentダウンロード µTorrent
___
 Adinfテーブル Adinf
EX_
 圧縮された実行可能ファイル(拡張子の先頭2文字は、圧縮前の拡張子の先頭2文字である（例：BMP を圧縮すると BM_ となる）。この方式のファイル圧縮は、マイクロソフトがCD-ROMやフロッピーディスク用に使用している) EXPAND
?Q?
 CP/MやMS-DOSのSqueeze
~$~
 テンポラリーファイル 1st Reader
~??
 古いバックアップファイル（例：MNU が ~MN になる） Resource Workshop - Borland Delphi
~H
 Cardfileのヒープ AZZ Cardfile
μ
 Metrowerks（英語版） Codewarriorプロジェクト
Π
 THINK C（英語版）プロジェクト
@@1, @@2, etc.
 Hidownloadのテンポラリーファイル Hidownload
0
 圧縮されたハードディスクデータ DoubleSpace
0B
 プリンター用フォント PageMaker
001, 002, ...
 あるファイルの分割ファイル HJSplit, JJSplit, split (Unix) (数字サフィックス使用時)
1
 ファックス
1
 ファックス 多数
1
 Roff/nroff/troff/groffソース cawf2.zip
123
 表計算 Lotus 1-2-3 バージョン9、バージョン97 表計算
15U
 プリンターフォント PageMaker
1ST
 通常はテキストファイルの「README.1ST」(最初に読むファイル) 多数 文書
2GR
 286グラバーファイル Windows
301
 ファックス Super FAX 2000 - Fax-Mail 96
386
 Intel 80386 processorドライバー Windows 3.x
386
 Windowsの仮想デバイスドライバー Windows
3DMF
 QuickDraw 3Dメタファイル QuickDraw
3DS
 3D Studioグラフィックスフォント 3D Studio
3DT
 データベースファイル 3D Topicscape
3FX
 エフェクト CorelChart
3GR
 386グラバーファイル Windows
Mobile Phone Video
3T4
 バイナリからASCIIへのファイル変換 Util3
4C$
 データファイル 4Cast/2
4MD
 音楽ファイル 音声
4SW
 4DOSのスワップファイル 4DOS
4TH
 FORTHのソースコードファイル ForthCMP - LMI Forth
555
 イメージファイル Sierra Entertainment
668
 音楽ファイル 音声
669
 音楽ファイル The 669 Composer 音声
6CM
 音楽ファイル Triton FastTracker 音声
75
 75x75 dpi ディスプレイフォント Ventura Publisher
7z
 7-Zipペッドファイル アーカイブ
8
 A86 ソースコードファイル
85
 ディスプレイフォント Ventura Publisher
8BF
 Adobe Photoshopの互換フィルター、プラグイン
8CM
 音楽ファイル Triton FastTracker 音声
8M
 プリンターフォント PageMaker
8U
 プリンターフォント PageMaker
89p
 実行プログラム TI Connect
8xp
 実行プログラム TI Connect
91
 ディスプレイフォント Ventura Publisher
96
 ディスプレイフォント Ventura Publisher
A
 ADAソースコードファイル
A
 ライブラリ unix
A##
 AlZip 圧縮ファイルの一部
A11
 Graphics AIIMイメージファイル
A80
 ソースファイル
AA, AB, ...
 あるファイルの分割ファイル split (Unix)
AAC
 Advanced Audio Coding （音楽ファイルの標準の1つ） 音声
AAF
 AutoPatcherファイル
AAF
 Advanced Authoring Format
AAS
 Animation Play Script AAPlay
AB6
 データファイル ABStat
AB8
 データファイル ABStat
ABC
 ドキュメント ABC FlowCharter 1.0
ABP
 データ ABComp 圧縮ファイル
ABP
 AVS Barcode Profile AVS Barcodeソース
ABF
 Adobe Binary Screen Font Adobe Systems Software
ABK
 Automaticバックアップファイル CorelDRAW
ABM
 イメージアルバムファイル
ABM
 アルバムファイル 多数
ABR
 Adobe Brushファイル PhotoShop
ABS
 Abstracts (情報ファイル)
ABS
 データファイル Abscissa
AC
 プロジェクトバックアップ Audit Command Language (ACL)
ACA
 プロジェクト Project Manager Workbench
ACB
 アーカイブ ACB アーカイブ
ACB
 ACMBを参照
ACC
 プログラム (DR-DOS - ViewMax) GEM / resident
ACCDA
 データファイル Microsoft Access Database Wizard (Open XML)
ACCDB
 データファイル Microsoft Access Database (Open XML)
ACCDE
 データファイル Microsoft Access Database Wizard (Open XML)
ACCDT
 データファイル Microsoft Access Database Template (Open XML)
ACCDU
 データファイル Microsoft Access Database Wizard (Open XML)
ACE
 アーカイブ ACE アーカイブ
ACF
 Adobe Custom Filter PhotoShop
ACL
 プロジェクト Audit Command Language (ACL)
ACL
 AutoCorrect List Microsoft Office
ACM
 Audio Compression Module add-on Windows
ACMB
 グラフィックファイル
ACO
 Adobe Color Palette
ACT
 ACTORソースコードファイル ACTOR
ACT
 Animations Works Actor (Graphics cell) Animation Works
ACT
 FoxDoc Action Diagrams FoxPro
ACT
 プレゼンテーション Action!
AfterDarkスクリーンセーバーのモジュール AfterDark
AD2
 ADPCM音声ファイル(2ビット) ZFAX
AD3
 ADPCM音声ファイル(3ビット) ZFAX
ADA
 Adaソースコードファイル
ADB
 Ada Package Body
ADC
 ビットマップ Scanstudio
ADC
 ディレクトリー Lingvo
ADD
 OS/2アダプターデバイスドライバー
ADF
 Amigaディスクファイル unADF, UAE, WinUAEなど
ADG
 データファイル ADG 3D Scene
ADI
 グラフィックファイル AutoCAD
ADI
 データベースのインデックスファイル Advantage Database Server
ADICHT
 LabChartデータ獲得ファイル ADInstruments
ADL
 MCAアダプター記述ライブラリー QEMM
ADM
 After Darkサポートファイル AfterDark
ADM
 ADEMファイルフォーマット ADEM
ADI
 Databaseメモファイル Advantage Database Server
ADN
 アドイン Lotus 1-2-3
ADR
 After Darkサポートファイル AfterDark
ADS
 Adaパッケージ仕様
ADT
 データファイル HP NewWave
ADT
 ディクショナリー Lingvo
ADT
 ファックス AdTech
ADI
 データベース Advantage Database Server
ADV
 GUSデバイスドライバー Gf166.com
ADX
 ドキュメント Archetype Designer
ADZ
 Amiga Disk Zipped (en:Amiga Disk File参照) GZip
AEP
 After Effectsプロジェクトファイル Adobe After Effects
AF2
 Flowchart ABC FlowCharter 2.0
AF3
 Flowchart ABC FlowCharter 3.0
AFI
 Truevisionビットマップ
AFL
 フォントファイル Lotus 1-2-3
AFM
 データファイル HP NewWave
AFM
 Type 1 font metric （ASCIIデータ） ATM - many
AFP
 Shape palette ABC FlowCharter
AFT
 テンプレート ABC FlowCharter 3.0
AFW
 ワークスペース ABC FlowCharter 3.0
AGR
 ArcView ASCII grid
AHK
 AutoHotkey分割ファイル AutoHotkey
AI
 Vector graphics file Adobe Illustrator
AIF
 see AIFF
AIFC
 圧縮されたen:Audio Interchange File Format
AIFF
 Audio Interchange File Format Convert (c) Villena 音声
AiM
 Asm Text Mode Image File The Ultimate Draw
AIN
 アーカイブ AIN アーカイブ
AIN
 Job schedule AutoIntern
AIO
 APLファイル変換ファイル
AIS
 Array of Intensity Samples graphics file Xerox
AIX
 カードファイル用のデータファイル HP NewWave
ALC
 Molecular coordinates Alchemy, RasMol
ALG
 Activity Log ARCSOLO
ALE
 Avid Log Exchange (フィルム・ビデオ編集用) Avid
ALL
 Arts & Letters symbol and font files Arts & Letters
ALL
 全ファイルのファイルリスト FRQView
ALL
 フォーマットファイル Always
ALL
 プリンター情報 WordPerfect for Win
ALO
 Almanac support file
ALT
 メニューファイル WordPerfect Library
ALZ
 AlZip圧縮ファイル
AMD
 データベース Siemens Maxum Chromatograph
AMF
 音楽ファイル (Advanced Module Format) DMP 音声
AMG
 アーカイブ AMGC アーカイブ
AMG
 イメージファイル ACTOR
AML
 AutomationML AutomationML Group
AMR
 音声ファイル
AMS
 Adobe Monitor Setup calibration file PhotoShop
AMS
 音楽ファイル 音声
ANA
 Lumina Decision Systems Analyticaファイル
ANI
 アニメーションカーソル Windows 95 - WinNT
ANI
 アニメーション IconAuthor
ANM
 アニメーション Deluxe Paint Animator
ANN
 Help Annotations Windows 3.x
Ann
 Multi volume ARJ archive ARJ
ANS
 ANSI character graphics (animation) file ANSView
ANS
 ASCII text ANSI character set NewWave Write
AOL
 America On-line for Windows DLL Windows
AOS
 Add-On Software Nokia 9000
AP
 アーカイブ WHAP アーカイブ
AP
 Datafile Datalex EntryPoint 90
APC
 プリンタードライバ Lotus 1-2-3
APD
 プリンタードライバ Lotus 1-2-3
APE
 Monkey's Audio (Lossless) audio media players
APF
 プリンタードライバ Lotus 1-2-3
API
 Adobe Printer Ink file for PhotoShop PhotoShop
API
 Passed parameter file 1st Reader
API
 プリンタードライバ Lotus 1-2-3
APL
 APL work space format file
APL
 Manugraphics APL productsのサポートモジュール Manugraphics APL products
APM
 Authorware Macintosh Authorware
APP
 Add-in application file Symphony
APP
 Application object file dBASE Application Generator
APP
 Application FoxPro
APP
 Application and Application Bundle macOS
APP
 Executable workflow / macro file Automator
APP
 Executable application file DR-DOS - NeXTstep - Atari
APP
 Generated application FoxPro
APR
 Employee performance review Employee Appraiser
APW
 Authorware Windows Authorware
APX
 Appexpert database file Borland C++ 4.5
AR
 Argon - for 3D Modeling Ashlar-Vellum
AR7
 Archive AR7 アーカイブ
ARC
 Archive ARC - PKARC/PKXARC - PKPAS - PKUNPAK - QUARK アーカイブ
ARC
 Archive SQUASH アーカイブ
ARD
 Map Holux - Alan
ARF
 Automatic Response File
ARH
 Archivers definitions file DN
ARI
 Archive ARI アーカイブ
ARJ
 Archive ARJ - ARJZ アーカイブ
ARK
 ARC archive CP/M port of ARC file archiver アーカイブ
ARK
 Archive QUARK アーカイブ
ARK
 Managing your Money Archive File
ARR
 Arrangement Atari Cubase
ART
 Gerber artwork Cadence Allegro
ART
 First Publisher, Designworks, Greenstreet Draw graphic file All GST/Greenstreet Draw products
ART
 Graphics (scrapbook) Art Import
ART
 Graphics format (Another Ray Tracer) PFS:1st publisher - Art Import
ARX
 Archive ARX アーカイブ
ASC
 ASCII text file 文書
ASC
 Transport armor file PGP
ASD
 Autosave file Microsoft Word
ASD
 Presentation Astound
ASD
 Screen driver Lotus 1-2-3
ASE
 Velvet Studio Sample AWAVE
ASE
 ASCII Scene Export 3D Studio
ASF
 Datafile STATGRAPHICS
ASF
 Screen font Lotus 1-2-3
ASF
 Advanced Streaming Format (Compressed Windows audio/video) Microsoft Corporation 音声/動画
ASK
 SYSGEN answer file RT-11
ASH
 Assembly language header file TASM 3.0
ASI
 ASIC language source ASIC
ASI
 Assembler include file Turbo C - Borland C++
ASM
 アセンブリ言語ソース TASM, MASM, NASM, Yasm, FASM
ASMX
 ASP.NET Web Service Microsoft Corporation
ASO
 Assembler object (object-oriented) file Turbo Assembler
ASP
 ASPECT source code file Procomm Plus
ASP
 Association of Shareware Professionals OMBUDSMN.ASP notice
ASP
 Active Server Pages (Microsoft.Net) Microsoft.Net製品
ASPX
 ActiveX Server Pages (Microsoft.Net) Microsoft.Net製品
ASS
 Amalgam Scene Specification Halo 2 Map Editor
ASS
 Advanced SubStation Alpha (Subtitles)
AST
 Adobe Color Separation table for PhotoShop PhotoShop
ASW
 Authorware Star Authorware
ASX
 Advanced Stream Redirector file (ASFも参照) Microsoft Corporation
ASZ
 Skin AltDesk
AT2
 Auto template Aldus Persuasion 2.0
AT3
 Atrac 3 Sound/music file Atrac 3+仕様の全ての機器やソフトウェア
ATM
 Adobe Type Manager data/info
ATN
 Adobe Photoshop action Adobe Photoshop
ATT
 AT&T Group GCGW
ATY
 3D Topicscapeのエクスポートファイル 3D Topicscape
AU
 Sun/NeXT/DEC Audio file AWAVE, GoldWave 音声
AU
 Sound (audio) file Sun Microsystems - Convert (c) Villena 音声
AUD
 Audio file AudioRack 音声
AUP
 Audacity project file Audacity
AUX
 Auxiliary dictionary ChiWriter
AUX
 Auxiliary references TeX/LaTeX
AUZ
 Ableton Live File Authorization File for Ableton Live
AVA
 Publication Avagio
AVB
 AntiViral Toolkit Pro Bases
AVI
 Audio Video Interleaved animation file Video for Windows、他多数 動画
AVR
 Audio Visual Research AWAVE
AVS
 Audio Video Software AVS Video Editor (video editing software)
AVT
 AVATAR-coding files A3E
AW
 Text file HP AdvanceWrite 文書
AWA
 Animations Works Accelerated Movie Animation Works 動画
AWD
 Microsoft Fax At Work Document Microsoft Fax At Work
AWK
 AWK script/program
AWM
 Animations Works Movie (as .AVI) Animation Works
AWS
 Data STATGRAPHICS
Ax
 Directshow filter file format
AXF
 ARM Executable Image ARM tools
AXM
 Axmedis object Axmedis Tools
AZD
 Amazon Software Download Amazon Software Download
AZW
 DRM enabled eBook Amazon Kindle
AZZ
 Data file AZZ Cardfile
B&W
 Black and white graphics file atari - mac
B&W
 Mono binary screen image 1st Reader
B
 Batch list APPLAUSE
B
 Brainfuckソースコード
B_W
 Black and white graphics file atari - mac
B1N
 スクリーンイメージ 1st Reader
B30
 Printer font (JLaser - Cordata) Ventura Publisher
B8
 Raw graphics file PicLab
BA
 Binary Archive Scifer Archiver and Compression [External Header Mode] アーカイブ
BAC
 Compiled BASIC RT-11 BASIC-11
BAD
 Bad file Oracle - 多数
BAD
 ディスクのバッドブロックを変換したファイル（移動不可） RT-11
BAK
 Backup file
BAL
 Music score Ballade
BALANCE
 Balance accounting sheet file Balance
BAR
 Horizontal bar menu object file dBASE Application Generator
BAR
 Info Bar for GFX2EXE GFX2EXE
BAR
 ブローカーのアーカイブ[1] IBM WebSphere Message Broker アーカイブ
BAS
 BASIC言語のソースファイル QuickBASIC - GW-BASIC - FreeBASIC
BAT
 バッチファイル MS-DOS, RT-11
BB
 データベースバックアップ Papyrus
BBL
 Bibliographic reference file TeX/BibTeX
BBM
 Brush Deluxe Paint
BBP
 Playlist BassBox
BBS
 Bulletin Board System announce またはテキストファイル
BBS
 Hudson-style messagebase FTN software
BC!
 未完成のダウンロード BitTorrent client
BCF
 カードデータ Bingo Card Creator
BCH
 Batch process object file dBASE Application Generator
BCH
 Datafile Datalex EntryPoint 90
BCO
 Outline font description Bitstream
BCP
 Borland C++ makefile
BCT
 Backup dictionary Clarion
BCW
 Environment settings Borland C++ 4.5
BDB
 Bookends database Bookends
BDC
 Dictionary Lingvo
BDEF
 Builder Definition Websphere Portlet Factory
BDF
 Adobe Glyph Bitmap Distribution Format Adobe Software
BDF
 Binary update file BUPDATE.EXE (c) TNT Techn.
BDF
 Bitmap Distribution Format font file X11
BDF
 Datafile Egret
BDM
 Videoclip AVCHD
BDR
 Border Microsoft Publisher
BDT
 Dictionary Lingvo
BEZ
 Outline font description Bitstream
BF
 Brainfuckのソースファイル
BF2
 Bradford 2 font
BFC
 Briefcase Win95 Windows 95
BFM
 Font metrics unix/Frame
BFX
 Fax BitFax
BGA
 Bitmap graphics
BGI
 Borland Graphics Interface device driver Turbo C - Turbo Pascal
BI
 BASIC include file Visual Basic - FreeBASIC
BIB
 Bibliography (ASCII)
BIB
 Database (TeX formatとは互換性なし) Papyrus
BIB
 Literature database TeX/BibTeX
BIF
 イメージフォーマット Image Capture board
BIK
 Bink video file (RAD Video)
バイナリファイル
BIN
 SGI Powerflip
BIN
 Text mode memory dump The Draw - TUD - ACiDDraw - etc
BIO
 BioniX Wallpaper playlist file BioniX Wallpaper Changer
BIO
 OS/2 BIOS
BIT
 Bitmap X11 画像
BK!
 Document backup WordPerfect for Win
BK
 Faxbook JetFax
BK?
 Backup file
BKn
 バックアップファイル WordPerfect for Windows
BKP
 バックアップファイル Write - TurboVidion DialogDesigner
BKW
 Mirror image of font set FontEdit
BLD
 BLoaDable picture BASIC
BLD
 SYSGEN Build procedure file RT-11
BLEND
 Blender3D Project File Blender
BLG
 Backup Log ARCSOLO
BLK
 Temporary file WordPerfect for Win
BM
 BitMap graphics file
BM3
 UIQ3 Phone backup
BMK
 Help Bookmarks Windows 3.x
Windows、OS/2のビットマップ画像ファイル QPeg、CorelDraw、PC Paintbrush、他多数 画像
BMT
 Lotus Ami Pro Button Ami Pro
BNA
 Data Atlas Boundary
BNK
 Adlib instrument bank file
BNR
 Graphics Banner Banner - Poster
BOK
 Shamela Library book Shamela Library Program
BOO
 Book-format READIBM
BOO
 圧縮されたASCIIアーカイブファイル BOO (msbooasm.arc) アーカイブ
BOO
 Boo programming language source file. Boo Programming Language
BOT
 Bot files, these go with JKB files Quake 3 Engine
BPC
 Chart Business Plan Toolkit
BPOLY
 Data Prisms binary 3D object
BPP
 Backup application Clarion
BPT
 Bitmap fills file CorelDRAW
BR
 Script Bridge
BRD
 Eagle Layout File
BRD
 Tanzzle board file Tanzzle
BRD
 Cadence Allegro board file Cadence
BRK
 Fax Brooktrout Fax-Mail
BRK
 The Brake! Mailer REXX script The Brake!
BRL
 CAD Ballistic Research Laboratory CAD
BS2
 Archive BS2.EXE
BSA
 Archive BSArc
BSC
 圧縮されたApple II アーカイブファイル BINSCII アーカイブ
BSC
 Database Source Browser
BSC
 Pwbrmake object file Microsoft Fortran
Half-Life\Half-Life 2 map files Valve Corporation
BSS
 Casio Phone base PC-LINK
BST
 BiblioTex file (BiblioTex=bibliography file) TeX
BSY
 Busy flag FTN soft
BTM
 Batch-to-memory (quick batch) 4dos -ndos
BTN
 Makeover Button file
BUFR
 Binary Universal Form for the Representation of Meteorological Data
BUG
 Bugs and Problems
BUN
 ワープロファイル 松 文書
BUN
 LucasArts Bundle File
BUP
 Backup file
BUT
 Button definitions Buttons!
BUY
 Datafile format movie
BVn
 Overflow file below insert point in Doc n WordPerfect for Win
BWB
 Spreadsheet application Visual Baler
BWR
 Beware (buglist) Kermit
BYU
 BYU Movie BYU
BZ2
 圧縮ファイル bzip2
BZM
 Map Blitzkrieg
C--
 C—language source Sphinx C--
C
 C言語ソース GCCなど
C
 Unix file archive COMPACT
C++
 C++言語ソース GCCなど
C00
 Print file Ventura Publisher
C01
 Typhoon wave files AWAVE
C86
 C source code file Computer Innovation C86
CA
 Initial cache data for root domain servers Telnet
CA?
 Borland packed and split file Borland Installer
Windows 95 packed file Windowsほか アーカイブ
CAC
 dBASE IV executable(cachedb.batを参照) dBASE IV
CAD
 Drawing BobCAD-CAM
CAD
 Document Drafix Windows CAD
CAL
 Calendar file Windows 3.x
CAL
 Spreadsheet format SuperCalc
CALS
 Computer Aided Acquisition and Logistics
CALS
 Support Raster Format
CAM
 Casio Camera
CAN
 Fax Navigator Fax
CAP
 Caption Ventura Publisher
CAP
 Capture file ProComm - Telix
CAS
 C + ASM language source Turbo C
CAT
 Catalog CP Backup - dBASE IV
CAT
 Device driver digital signature Microsoft Windows
CAT
 Stellarium Star Catalogue Stellarium
CATDrawing
 Drawing file of CATIA V5 CATIA V5
CATPart
 Part file of CATIA V5 CATIA V5
CATProduct
 Assembly file of CATIA V5 CATIA V5
CATS
 Combined source ATS
CBA
 Source code Creative BASIC
CBC
 Fuzzy logic system CubiCalc
CBL
 COBOLソースファイル
CBM
 Compiled bitmap graphics XLib
CBR
 Comic Book Reader (RAR file) CDisplay and similar
CBS
 MasterWord button bar configuration file
CBT
 Computer Based Training many
CBZ
 Comic Book Reader (ZIP file) CDisplay and similar
CC
 C++言語ソース GCCなど
CC
 CC language source CC
CCC
 Bitmap graphics (native format) Curtain Call
CCF
 Communications configuration file Symphony
CCH
 Chart CorelChart
CCITT
 CCITT Group 3 and Group 4 Encoding
CCL
 Communication Command Language file Intalk
CCO
 BTX Graphics file XBTX
CCT
 Print Template BobCAD-CAM
CD
 CD description DN
CDA
 CD-Audio Windows 95
CDB
 Card database CardScan
CDB
 Main database TCU Turbo C Utilities
CDF
 Common Data Format
CDF
 Cyberspace Description Format
CDF
 Graphics netcdf
CDK
 Document Atari Calamus
CDL
 CADKey CADL Language CADKey
CDM
 Disk Drivers NPA Novell NetWare
CDM
 Music format (compressed)
CDR
 Vector graphics format (drawing) CorelDraw!
CDT
 Corel Draw Template File CorelDraw!
CDX
 Compound index file Visual FoxPro, Advantage Database Server
CE
 Computer Eyes Conversion Artist
CE
 Main.ce The FarSide Computer Calendar
CEB
 Cont. Edge Bitmap Conversion Artist
CEF
 CA-Clipper Workbench Application CA Clipper
CEF
 Export File
CEF
 Compact Embedded Font Adobe Illustrator
CEG
 Bitmap graphics Tempra Show - Edsun Continuous Edge Graphics
CEL
 Animation CEL 3D Studio
CEL
 Graphics Autodesk Animator - Lumena
CF
 Configuration file imake
CFG
 Configuration file
ColdFusion Component Adobe ColdFusion
CFG
 設定ファイル
CFL
 Chart CorelFLOW
CFM
 ColdFusion Markup Language Adobe ColdFusion
CFN
 Font data Atari Calamus
CFO
 C Form Object internal format object file TCU Turbo C Utilities
CFP
 Fax The Complete Fax Portable
CFT
 CFast graphics file Disney Animation Studio
CGA
 CGA display font Ventura Publisher
CGI
 Common Gateway Interface script
CGM
 Computer Graphics Metafile vector graphics A&L - HG - many
CH
 Clipper language header CA Clipper
CH3
 Chart Harvard Graphics 3.0
CH4
 Presentation Charisma 4.0
CHD
 Font descriptor FontChameleon
CHI
 ChiWriter Document ChiWriter - Chiview
CHK
 Recovered data DOS CHKDSK
CHK
 Temporary file WordPerfect for Win
CHL
 Configuration History Log
コンパイル済みHTMLヘルプ Microsoft Windows, Help Explorer Viewer
Encrypted Data File Krasbit Technologies, Chameleon Imaging Workflow Software
CHN
 Data Ethnograph 3
CHP
 Chapter file Ventura Publisher
CHR
 Character set Turbo C - Turbo Pascal
CHT
 Chart Harvard Graphics 2.0 - SoftCraft Presenter
CHT
 CHeaT in any program/game many
CHT
 Interface file for ChartMaster dBASE
CHZ
 Archive CHARC
CIF
 Caltech Intermediate Format graphics file
CIF
 Chapter information Ventura Publisher
CIF
 Crystallographic Information File RasMol, Jmol
CiM
 C Text Mode Image File The Ultimate Draw
CIX
 Database index TCU Turbo C Utilities
CKB
 Borland C++ 4.x editor keystroke mapping BCW.EXE
CL
 COMMON LISP source code file
CLA
 Source Clarion
CLASS
 Java classファイル Java
CLD
 Clipper debugger configuration file CA Clipper
CLP
 Clip art graphics file Quattro Pro
CLP
 Windows クリップボードファイル Windows 3.x
CLP
 Compiler response file CA Clipper
CLP
 Graphics format PCPAINT/Pictor
CLR
 Color binary screen image 1st Reader
CLR
 Color definitions Photostyler
CLR
 Color scheme Boxer/2
CLR
 Palette file for GIS format
CLS
 C++ class definition file
CLW
 MFC Class Wizard information Microsoft VC++
CM
 Data file CraftMan
CMB
 Xtree for Windows Button Bar file
CMD
 Command dBASE - Waffle
CMD
 コマンドプロンプト バッチファイル Microsoft Windows NT based operating systems
executable programs CP/M-86 operating system
CMD
 External command menu 1st Reader
CMD
 OS/2 batch/REXX file OS/2
CMF
 FM-music file (Creative Music File)
CMK
 Card Card Shop Plus
CMM
 CMM script (batch) file CEnvi
CMP
 Bitmap graphics (Lead CMP compression)
CMP
 Compressed data PKWare Inc. data compression library
CMP
 Header file for PostScript printer files CorelDRAW
CMP
 Photofinish Calibration Map Photofinish
CMP
 User dictionary Microsoft Word for DOS
CMRL
 Concise message routing language DOTGO
CMS
 Content Management System Any Web Browser
CMU
 Carnegie Mellon University Formats
CMV
 Animation (CorelMove CorelDraw 4.0) CorelMove CorelDraw 4.0
CNC
 CNC general program data
CND
 System generation conditional file RT-11
CNF
 Configuration (program - printer setup) program - printer setup
CNF
 Configuration file
CNV
 Temporary file WordPerfect for Win
CNV
 Windowsword DLL used as part of an import operation (CNV=converter) Microsoft Word
CO
 Cobalt - parametric drafting and 3D modeling Ashlar-Vellum
COB
 Calgari trueSpace2 File Format
COB
 COBOL ソースファイル
COD
 Code definition table UUPC
COD
 Datafile Forecast Plus - Microsoft Multiplan - StatPac Gold
COD
 file uncluding CODES for any program/game many
COD
 Printer code definition file Boxer/2
COD
 Program compiled code FORTRAN
COD
 Template source file dBASE Application Generator
COD
 Videotext file
COE
 Coefficient file Xilinx ISE
COF
 Animation Control File Diablo II
COL
 Color palette Autodesk Animator - many
COL
 Spreadsheet Microsoft Multiplan
コマンドファイル DOS
COM
 Indirect command file (sequence of commands to be executed) RT-11
CON
 Configuration file Simdir
CON
 MSTS Consist file MSTS
CPC
 Compressed image Cartesian Perceptual Compression
CPD
 Script Complaints Desk
CPF
 Fax The Complete Fax
CPI
 イメージファイル ColorLab
CPI
 MS-DOS codepage file MODE.EXE
CPL
 コントロールパネルファイル Windows 3.x
CPL
 Presentation Compel
CPMZ
 ConPro/Miradi Zipfile Miradi and ConPro
CPP
 C++言語ソース GCCなど
CPP
 Presentation CA-Cricket Presents
CPR
 Knowledge Access GCGW
CPS
 backup of startup files QEMM (?) autoexec.cps
CPT
 Encrypted memo file dBASE
CPT
 Mac file archive COMPACT PRO アーカイブ
CPT
 Template CA-Cricket Presents
CPZ
 Music text file COMPOZ
CR2
 Raw image format Canon digital cameras
CRA
 Advanced crack file (usually text)
CRD
 Cardfile Windows 3.x - YourWay
CRD
 Map Holux - Alan
CRD
 Molecular coordinates CHARMM, RasMol
CRF
 Cross-reference Microsoft MASM - Zortech C++, RT-11 CREF
CRK
 Crack file (usually text)
CRP
 Encrypted database dBASE IV
CRS
 File Conversion Resource WordPerfect 5.1
CRT
 Terminal settings information Oracle
CRU
 Compressed file archive created by CRUSH
CS
 C#ソースファイル C#
CSD
 Compact Shared Document Dream To Reality [1]
CSG
 Batch file (Submit) ISIS/w
CSG
 Graph Statistica/w
CSM
 Borland C++ 4.x precompiled header file BCW.EXE
CSP
 PC Emcee Screen Image file Computer Support Corporation
CSS
 Datafile CSS - Stats+
CSS
 Datasheet Statistica/w
CSS
 カスケーディング スタイル シート
CSV
 Adjusted EGA[要曖昧さ回避]/VGA[要曖昧さ回避] palette CompuShow
CSV
 Comma Separated Values text file format (ASCII)
CTC
 Control file PC Installer
CTF
 Character code translation file Symphony
CTK
 CommonTime Key file CommonTime software applications
CTL
 Control file dBASE IV - Aldus Setup
CTL
 BATCHコントロールファイル RT-11
CTT
 BATCH Temporary file RT-11
CTX
 Ciphertext file Pretty Good Privacy RSA System
CTX
 Course TeXt file some Microsoft online guides
CTX
 document Creativyst Table eXchange
CUF
 C Utilities Form definition TCU Turbo C Utilities
CUR
 Windowsリソース (マウスカーソルの画像ファイル) Resource Workshop - WRT - Watcom Resource Editor
CUT
 Graphics format (bitmapped graphics) dr. Halo
CV4
 Color file CodeView
CVP
 Cover page WindowsFax
CVS
 Graphics Canvas
CVT
 Backup file for CONVERTed database file dBASE IV
CVW
 Color file CodeView
CWEB
 C Web
CWK
 Datafile ClarisWorks, Appleworks
CXX
 C++ソースファイル Zortech C++
D
 D言語ソースファイル DMD
D4D
 Data Draw 4D object
D4P
 Data Draw 4D Pro object
D64
 コモドール64 disk image
DAA
 Direct Access Archive
DAF
 Data file Digital Anchor
DAT
 Maxum chromatograph chromatogram Siemens Maxum Chromatograph
DAT
 Document Microsoft Word Format (old) 文書
DAT
 data RSNetWorx Project
DAT
 Data file in special format or ASCII
DAT
 Database file Clarion (programming language)
DAT
 光ディスクのイメージファイル cdrdao, burnatonce
DAT
 Video CD MPEG stream
DATS
 Dynamic source ATS
DB$
 Temperature debug info Clarion Modula-2
DB$
 Temporary file dBASE
DB
 Database file Paradox - XTreeGold - dbvista
DB
 Configuration dBASE IV - dBFast
DB
 Multi Edit config ME
DB2
 Database dBASE II
DB3
 Database dBASE III
DBA
 Database file Turbo Prolog - DataEase
DBA
 DarkBasic source code
DBC
 DataBaseContainer Visual FoxPro
DBD
 Business data Business Insight
DBD
 Debug info Clarion Modula-2
DBF
 Database file dBASE III/IV - Visual FoxPro - dBFast - DataBoss - DBVista - CA-Clipper - Visual Objects - Alaska Xbase++ -

Advantage Database Server

DBG
 Debugger script DOS debug - Watcom debugger
DBG
 Symbolic debugging information Microsoft C/C++
DBK
 Database backup dBASE IV
DBL
 DIBOL source file
DBM
 Datafile DataEase
DBM
 Menu template DataBoss
DBO
 Compiled program dBASE IV
DBPro
 DarkBasicPro Project
DBS
 Data file used by Managing Your Money
DBS
 Database in SQL Windows format
DBS
 Datafile PRODAS
DBS
 Printer description file Microsoft Word, Microsoft Works
DBT
 FoxBASE+ style memo FoxPro 2.x
DBT
 Memo file for database w/same name dBASE IV - dBFast
DBW
 Windows file DataBoss
DBX
 DataBeam GCGW
DBX
 AutoCAD Database AutoCAD
DBX
 Archive File Outlook Express
DC
 CAD drawing file DesignCAD 3000 for Windows
DC6
 Image file Diablo II
DCA
 Document Content Architecture text file IBM DisplayWrite
DCC
 Animation Diablo II
DCD
 CAD Drawing File DesignCAD 3DMax for Windows
DCF
 floppy disk image Disk Copy Fast
DCH
 Schematic Drawing file DipTrace Schematic Capture
DCI
 Dreamcast Save File Dreamcast
DCL
 Delphi Control Library Borland Delphi
DCM
 DCM music module AWAVE
DCP
 OS/2 device code page OS/2
DCS
 Bitmap graphics (CYMK format) QuarkXPress
DCS
 Datafile ACT! Activity Files
DCT
 Dictionary Clarion、他多数
DCT
 Spell checking dictionary Harvard Graphics 3.0 - Symphony
DCT
 DataBaseContainer Extension Visual FoxPro
DCU
 Delphi unit (compiled) Borland Delphi
DCW
 Walter Machine Programing Walter Profile Editor
DCX
 Multi-page PCX graphics (common fax format) Intel - SpectraFAX 画像
DCX
 DataBaseContainer Index Visual FoxPro
DD
 Macintosh file archive DISKDOUBLER
DDA
 Data GLBasic ASCII 3D object
DDB
 Bitmap graphics
DDB
 Digidesign Database File Digidesign ProTools
DDI
 Disk image DiskDupe
DDP
 Device Driver Profile file OS/2
DDS
 DirectDraw Surface file Microsoft Flight Simulator, other Microsoft programs
DEB
 DEBUG script DOS Debug
DEF
 Assembly header file Geoworks
DEF
 Defaults - definitions
DEF
 Linker definition file TLink - WLink...
DEM
 Demonstration
DEM
 Digital Elevation Model
DEM
 Graphics file VistaPro
DEM
 Vista DEM file Meta.exe VP3
DES
 Ascii text parameter description AWAVE
DESKLINK
 Windows Explorer Desktop Control Windows
desktop
 Desktop Entry freedesktop.org
DEV
 Device driver
DEV
 SYSGEN handler build procedure RT-11
DEV
 Dev-C++プロジェクトファイル Dev-C++
DFD
 Data Flow Diagram graphic file Prosa
DFF
 RenderWare model data (e.g. Grand Theft Auto III and later)
DFI
 Outline font description Digifont
DFL
 Default program settings Signature
DFM
 Data Flow Diagram model file Prosa
DFM
 Delphi form module Borland Delphi
DFS
 Delight Sound File
DFV
 Printing form (Word) Microsoft Word
DFX
 Micrografx Effects DLL
DGN
 Graphics file MicroStation
DGS
 Diagnostics
DH
 Dependency information for .ph Geoworks
DHP
 Dr. Halo PIC Format graphics file Dr. Halo II - III
DHT
 Datafile Gauss
DI
 D言語 interface file DMD
DIA
 Diagraph graphics file Computer Support Corporation
DIB
 デバイスに依存しないビットマップ Windows、OS/2のビットマップ
DIC
 Dictionary (e.g. from WinWord)
DIF
 Borland patch data file Borland patch
DIF
 Data Interchange Format Visicalc
DIF
 OS/2 V2.2 Display Information File OS/2
DIF
 Output from Diff command
DIF
 SRCCOM, BINCOM output file RT-11
DIG
 Digilink AWAVE
DIG
 Sound Designer 1 audio file AWAVE
DIP
 Graphics
DIP
 Watcom debug info processor WatcomDebugger
DIP
 PCB Drawing file DipTrace PCB Layout
DIR
 Dialing directory file Procomm Plus
DIR
 Directory file VAX - CPS Backup
DIR
 Movie MacroMind Director 4.x
DIR
 Directory listing file RT-11
DIS
 Distribution file VAX Mail
DIS
 Thesaurus CorelDraw
DIZ
 Description file (Description In Zip)
DJVU
 DJVU Document Format DJVU
DKB
 Raytraced graphics DKBTrace
DL
 Animation format (Italian origin) Display - DL Viewer
DLD
 Lotus 1-2-3
DLF
 Dialogue Live Format Exstream Dialogue, Dialogue Live Editor
DLG
 Dialog resource script file Microsoft Windows SDK
DLG
 Dialog resources DN
DLG
 Windows SDKダイアログエディタ の データファイル
DLG
 Windows SDK dialog editor data file
DLL
 ダイナミックリンクライブラリ Windows 3.x - OS/2
DLL
 Export/import filter CorelDRAW
DLM
 Microsoft File Transfer Manager Microsoft File Transfer Manager
DLP
 Data DAQLab
DLS
 Setup Norton Disklock
DMF
 Music format (Delusion Digital Music File) Delusion
DMG
 Apple Disk Image macOS (Disk Utility),
DMO
 Demo Derive
DMP
 Dump file (e.g. screen or memory)
DMP
 DUMP utility output file RT-11
DMS
 Amiga file archive DISKMASHER
DNG
 Digital Negative (DNG) 多数のカメラやソフトウェア
DNT
 data RSNetWorx Project
DOC
 ドキュメントファイル。テキストファイル形式の説明書。 多数 文書
DOC
 ワープロファイル Microsoft Word、他 文書
DOCM
 Microsoft Word 2007 Master document Microsoft Word 2007 文書
DOCX
 Office Open XML ドキュメント Microsoft Word 文書
DOF
 Delphi project options file Borland Delphi
DOG
 Screen file Laughing Dog Screen Maker
DOH
 Dependency information for .poh Geoworks
DOR
 Roland Digital audio file Roland
DOS
 External command file 1st Reader
DOS
 Network driver (e.g. pkt_dis.dos)
DOS
 OS/2 V3 SVGA PMI-File Svga.exe
DOS
 MS-DOS用システムファイル (例：MSDOS.DOS, AUTOEXEC.DOS。MSDOS.SYS, AUTOEXEC.BATの変化版である。) Windows 95, 98
DOS
 Text file containing DOS specific info 文書
DOT
 Line-type definition file CorelDRAW
DOT
 Microsoft Word document template Microsoft Word
DOTX
 Office Open XML ドキュメント テンプレート Microsoft Word
DOX
 Text file MultiMate 4.0
DOZ
 Description Out of Zip VENDINFO
DP
 Calendar file Daily Planner
DP
 Data file DataPhile
DPR
 Default project- and state-related information Borland C++ - Delphi - C
DPX
 Digital Moving Picture Exchange
DRP
 Web3D File Web3D
DRS
 Display Resource WordPerfect for Win
DRV
 Driver
DRW
 Designer vector graphics file Designer - MicroGraphix
DS
 TWAIN Data Source Any twain-source
DS1
 Map file Diablo II
DS4
 Vector graphics Micrografx Designer 4.x
DSC
 Celestia Deep Space Catalog file Celestia
DSC
 Description file
DSC
 Discard file Oracle
DSD
 Database DataShaper
DSF
 Data Storage Format Golden Helix
DSF
 Delusion Digital Sound File Delusion
DSK
 Desktop configuration BP - DN - BC++ - TP
DSK
 Disk Drivers Novell NetWare
DSK
 Logical disk file RT-11
DSM
 Digital Sound Module DSI
DSN
 Design Object System Designer
DSP
 Display parameters Signature
DSP
 Dynamic Studio Professional Module Dynamic Studio
DSP
 Graphics display driver Dr. Halo
DSP
 Norton viewer DLL Windows
DSR
 Driver Resource WordPerfect for Win
DSS
 Screensaver file DCC
DSS
 Digital Speech Standard (Sound) Digital Soup
DSS
 SQL Script for .Time Framework Exaktime
DST
 WAIN (Scanner spec) data source DLL Windows
DSW
 Borland C++ 4.x desktop layout file BCW.EXE
DSY
 DAISY container file ADAKTA.EXE
DT1
 Tile file Diablo II
DT_
 Data fork of a Macintosh file Mac-ette
DTA
 Data file Turbo Pascal - PC-File - Stata
DTB
 Database Backup for .Time Framework Exaktime
DTF
 Database file PFS - Q&A
DTL
 Django template language djangoproject
DTM
 DigiTrekker music module AWAVE
DTO
 data Directory Toolkit output
DTP
 Desk Top Publishing Document Timeworks / greenstreet Publisher3/ Greenstreet Publisher 4.5
DTP
 Page Magic 2.0 publication Page Magic 2.0 upgrades to Greenstreet Publisher
DTP
 Publication Publish-It! upgrades to Greenstreet Publisher
DVC
 Data Lotus 1-2-3
DVDPROJ
 iDVD project file iDVD (Apple iLife '08)
DVI
 DeVice Independent document TeX
DVP
 DESQView run-file DESQView
DVP
 Device parameter file AutoCAD
DW2
 Drawing DesignCAD for DOS, & DesignCAD for Windows
DWB
 Coryphaeus Software Designers Workbench CSD
DWC
 Archive DWC
DWD
 DiamondWare Digitized file AWAVE
Drawing AutoCAD, IntelliCAD, PowerCAD, Drafix, etc.
DX
 Text file DEC WPS/DX format - DEC WPS Plus
DXF
 Dialogue Exchange Format Exstream Dialogue
DXF
 Drawing Interchange File Format vector graphics AutoCAD, IntelliCAD, PowerCAD, etc.
DXN
 Fax Fujitsu dexNET
DXP
 SpotFire data TIBCO Spotfire
DXP
 ISO creation project file CD Burner XP Pro
DYN
 Data Lotus 1-2-3
E
 E language source code E
E2D
 2-dimensional vector graphics file Editor included in JFire
EAS
 Extended file attributes OS/2
EAR
 Enterprise archive archive
EBA
 Source code Emergence BASIC
EBJ
 Error-checking object file Geoworks
EBQ
 CITE standard electronic BQ exchange file
EC
 Error checking preprosessed Goc source code Geoworks
EC
 Source code Ecere SDK
ECC
 Error-checking file dvdisaster
ECE
 Escenic Contentng Engine dynamic page Escenic
ECMS
 Status document ECMerge
ECMT
 Template document / Session ECMerge
ED5
 EDMICS GCGW
EDA
 Ensoniq ASR disk image AWAVE
EDE
 Ensoniq EPS disk image AWAVE
EDF
 European data format Medical timeseries storage files
EDF
 Macrocom Online Kitchen-planer
EDK
 Ensoniq KT disk image AWAVE
EDL
 EDL Premiere
EDQ
 Ensoniq sq1,2/ks32 disk image AWAVE
EDS
 Ensoniq SQ80 disk image AWAVE
EDT
 Default settings VAX Edt editor
EDT
 Ensoniq TS disk image AWAVE
EDT
 External editors definitions DN
EDV
 Ensoniq VFX-SD disk image AWAVE
EEB
 Button bar for Equation Editor WordPerfect for Win
EFA
 Ensoniq ASR file AWAVE
EFA
 Encrypted File Archive
EFE
 Ensoniq EPS file AWAVE
EFE
 Ensoniq EPS instrument file AWAVE
EFK
 Ensoniq KT file AWAVE
EFQ
 Ensoniq SQ1/SQ2/KS32 file AWAVE
EFS
 Ensoniq SQ80 file AWAVE
EFT
 Ensoniq TS file AWAVE
EFT
 High resolution screen font ChiWriter
EFV
 Ensoniq VFX-SD file AWAVE
EFX
 Fax Everex EFax
EGA
 EGA display font Ventura Publisher
EKA
 Internal data files Borland's Eureka
EL
 ELISP source code file Emacs lisp
ELB
 Synergy/DE library
ELC
 Compiled ELISP code Emacs lisp
ELI
 Archive ELI
ELT
 Event list text file Prosa
EMAKER
 E language source code (maker) E
EMD
 ABT Extended MoDule AWAVE
Microsoft Enhanced Metafile
EML
 Stationery Template Outlook Express
EMU
 Terminal emulation data BITCOM
ENC
 Encoded file - UUENCODEd file Lotus 1-2-3 - uuexe515.exe
ENC
 Music Encore
END
 Arrow-head definition file CorelDRAW
ENFF
 Extended Neutral File Format
ENG
 Dictionary engine Sprint
ENG
 English documentation
ENG
 Graphics file (charting) EnerGraphics
ENV
 Envelope or Environments
ENV
 Enveloper macro WOPR
ENV
 Environment file WordPerfect for Win
EPD
 Publication Express Publisher
EPI
 Document Express Publisher
EPI
 Encapsulated PostScript graphic file
EPS
 Encapsulated PostScript (Graphics format) CorelDraw - PhotoStyler - PMView - Adobe Illustrator - Ventua Publisher
EPUB 電子書籍 ソニー・リーダー

楽天 kobo Touch

EQN
 Equation filE WordPerfect for Win
ERD
 Entity Relationship Diagram graphic file Prosa
ERL
 Erlang source code file
ERM
 Entity Relationship Diagram model file Prosa
ERR
 Compiler/linker error report
ESH
 Extended Shell batch file
ETH
 Document Ethnograph 3
ETF
 Encrypted Text File. Used in some security programs.
ETW
 EnterTechの独自フォーマット Enter-Tech
ETX
 Structure-enhanced text
EUI
 Ensoniq EPS family CD image AWAVE
EVT
 Events descriptions
EVY
 Document WordPerfect Envoy
EWD
 Document Express Publisher for Windows
EX3
 Device driveR Harvard Graphics 3.0
EXC
 Exclude file for Optimize (do not process) (QEMM) QEMM
EXC
 REXX source code file VM/CMS
Directly executable program DOS
EXF
 Excute file OnHand PC
EXM
 MSDOS executable, system-manager compliant (HP calculator) HP calculator
EXP
 Protected mode EXE by PharLap Software PharLap
EXP
 Exports Library File Visual Studio
EXT
 Extensions descriptions file
EXX
 Intermediate file by MsgPut IBM LinkWay
EZF
 Fax Calculus EZ-Fax
F
 Archive FREEZE
F
 Fortran language source code file (固定形式) Many Fortran compilers
F01
 Fax perfectfax
F03
 Fortran language source code file (固定形式) Many Fortran compilers
F2R
 Farandole Linear Module Farandole
F3R
 Farandole Blocked Linear Module Farandole
F4
 Fortran IV source code file
F4A
 Audio for Adobe Flash Player 音声
F4B
 Audio Book for Adobe Flash Player
F4P
 Protected Video for Adobe Flash Player
F4V
 Video for Adobe Flash Player
F77
 Fortran language source code file (固定形式) Many Fortran compilers
F90
 Fortran language source code file (in free form) Many Fortran compilers
F95
 Fortran language source code file (in free form) Many Fortran compilers
F96
 Fax Frecom FAX96
FAC
 see FACE
FACE
 Usenix FACE graphics file
FAM
 Famtasia Famicom image format Famtasia
FAQ
 Frequently Asked Questions text file
FAR
 Music format (Farandole Composer Module) Farandole
FAS
 Macsyma compiled program
FAX
 Fax (raster graphics in CCITT format) most Fax programs
FBM
 Fuzzy Bitmap
FC
 Spell checking dictionary Harvard Graphics 2.0
FCM
 Binary file patch file (forward compression) jlpak10.zip
FD
 Declaration file Microsoft Fortran
FD
 Field offsets for compiler DataFlex
FD
 Front Door' resource files FD
Font Definition Block Ming library
FDS
 fwNES Famicom Disk System image fwNES
FDS
 Headerless Famicom Disk System image
FDW
 Form F3 Design and Mapping
FE
 Data Surface Evolver 3D surface
FEB
 Button bar for Figure Editor WordPerfect for Win
FEI
 Fatal Error Infotable Geoworks
FES
 3D Topicscape の出力ファイル 3D Topicscape
FF
 Intelligont FIAS format
FF
 Outline font description Agfa Compugraphics
FFE
 Front Fareast Famicom image format
FFF
 Fax defFax
FFI
 Atech FastFont (AllType)
FFIVW
 Interchange of Virtual Worldsのファイル形式 Interchange of Virtual Worlds
FFT
 Dca/FFT Final Form Text text file (DisplayWrite)
FFT
 DCA/FFT Final Form Text text file DisplayWrite
FH3
 Vector graphics Aldus FreeHand 3.x
FH4
 Vector graphics Aldus FreeHand 3.x
FI
 Interface file Microsoft Fortran
FIF
 Fractal Image Format file
FIG
 Figure File MATLAB
FIL
 Table Data Audit Command Language (ACL)
FIL
 File template Application Generator
FIL
 Filelist
FIL
 Files list object file dBASE Application Generator
FIL
 ミラープログラムの出力ファイル MS-DOS, PC Tools
FIL
 Overlay WordPerfect
FIL
 Virus Vault by AVGの移動ファイル Virus Vault by AVG
FILM
 Filmkey film file Filmkey Player
FIN
 Print-formatted text file Perfect Writer - Scribble - MINCE
FIO
 Aldus PhotoStyler graphics filter
FIO
 Image PALS viewer DLL
FIT
 File Index Table Windows NT
FIT
 see FITS
Flexible Image Transport System
FIX
 Patch file
FKY
 Macro file FoxPro
FLA
 Adobe Flash files' basic format
Audio codec, Audio file format 音声
FLAME
 Fractal configuration file Apophysis
FLB
 Format library Papyrus
FLC
 Animation format FLIC >320x200 AAPlay - Autodesk AniPro
FLD
 Folder Charisma
FLI
 Animation format FLIC 320x200 Autodesk Animator
FLI
 TeX font library EmTeX
FLM
 Film Roll AutoCAD/AutoShade
FLP
 Flstudio project file Fruity Loops (FlStudio)
FLT
 Data/file conversion filter (or overlay) Alsud, Microsoft Word
FLT
 Filter file Micrografx Picture Publisher
FLT
 MultiGen Flight
FLT
 Support file - graphics filter Asymetrix ToolBook
FLX
 Animation format
FLX
 Compiled binary DataFlex
FLV
 Flash video file Flash Video Player
FM
 Database FileMaker Pro
FM1
 Spreadsheet format overlay Lotus 1-2-3 release 2.x
FM3
 Device driver Harvard Graphics 3.0
FM3
 Spreadsheet Lotus 1-2-3 release 3.x
FMB
 File Manager Button bar WordPerfect for Win
FMF
 Font or icon file IBM LinkWay
FMK
 Makefile Fortran PowerStation
FMO
 Compiled format file dBASE IV
FMT
 Format file dBASE IV - FoxPro - Clipper 5 - dBFast
FMT
 Gate3 format file
FMT
 Style sheet Sprint
FMV
 Full Motion Video file
FN3
 Font file Harvard Graphics 3.0
FND
 Files searching properties Windows 95
FNI
 FileNet Native Document FileNet
FNK
 FunkTracker music module AWAVE, FunkTracker
FNM
 Fannie Mae Residential Loan Data (RLD) Desktop Originator
Fnn
 DOS screen text font - height nn pixels fntcol13.zip
FNT
 Font file many
FNX
 Inactive font Exact
FO1
 Font file Borland Turbo C
FO2
 Font file Borland Turbo C
FOG
 Fontographer Database File Fontographer3.5
FOL
 Folder of saved messages 1st Reader
FON
 Log of all calls Procomm Plus
FON
 Terminate phonebook Terminate - Terminator - Telix
FON
 Windows bitmapped font file Windows
FONT
 Font data unix
FOP
 Freedom of the Press graphic file
FOR
 Form WindowsdowBase
FOR
 Fortran language source file many
FOT
 Installed Truetype font Windows Font Installer
FOX
 Foxbase executable (precompiled .prg) FoxBase
FP
 Final Page file FoxPro for DOS
FP
 Tiff file TIFF/IT P1
FP
 Video file DVICO/TVIX MPEG1 video file
FP3
 Database FileMaker Pro
FP4
 Database FileMaker Pro
FP5
 Database FileMaker Pro
FP7
 Database FileMaker Pro
FPC
 Catalog FoxPro
FPD
 TMT Pascal compiled unit TMT Pascal
FPM
 Configuration file FoxPro for MacIntosh
FPT
 Foxpro memo field tables FoxPro
FPU
 Configuration file FoxPro for Unix
FPW
 Floorplan drawing FloorPLAN plus for Windows
FPW
 Configuration file Visual FoxPro
FR?
 Packed mail FTN software
FR3
 Renamed dBASE III+ form file dBASE IV
FRF
 FontMonger Database file FontMonger
FRG
 Uncompiled report file dBASE IV
FRL
 GP-Forth library GP-Forth
FRM
 Registration or other form
FRM
 Report file dBASE IV - Clipper 5 - dBFast
FRM
 Visual Basic Form Visual Basic
FRO
 Compiled report file dBASE IV
FRP
 Form PerForm PRO Plus - FormFlow
FRS
 Screen Font Resource WordPerfect for Win
FRT
 Additional (FPT) report description file FoxPro
FRT
 GP-Forth source file GP-Forth
FRX
 Main (DBF) report description file Visual FoxPro
FRX
 Visual Basic binary program file Visual Basic
FSA
 Applied Biosystems Genetic Analysis data file GeneScan
FSIM
 Simulation File Format Loudsoft
FSL 筆王ラベルメーカー
FSL
 Form Paradox for Windows
FSM
 Farandole Composer WaveSample Farandole
FSPROJ
 Habanero Firestarter project Habanero Firestarter
FST
 Linkable program dBFast
FST
 Temporal database file GTKWave data file
FSX
 Data Lotus 1-2-3
FTM
 Fielded Text Meta Fielded Text
FTM
 Font file Micrografx
FTX
 Declared Fielded Text Fielded Text
FTXT
 text Cloanto text document
FTP
 Configuration FTP Software PC/TCP
FW
 Database FrameWork
FW2
 Database Framework II
FW3
 Database Framework III
FWEB
 Fortran WEB
FX
 On-line guide FastLynx
FXD
 Phonebook FAXit
FXP
 Foxpro executable (precompiled .prg) Visual FoxPro
FXS
 FAX Transmit Format graphics file WindowsFax
FYF
 FileLoc FyTek, Inc.
G
 Data chart APPLAUSE
G16
 GoldED for DOS compiled config GOLDED.EXE
G3P
 data Grand Prix 3 car physics
G8
 Raw graphics file (one byte per pixel) plane three PicLab - Cubicomb Picturemaker
GAM
 Fax GammaFax
GB
 Game Boy ROM
GB1
 Game Maker backup file (GB2, GB3も参照)
GBA
 Game Boy Advance ROM
GBC
 Game Boy Color ROM
GBL
 Global definitions VAXTPU editor
GBL
 Global module in Basic programs
GBR
 GIMP brush
GC1
 Lisp source code Golden Common Lisp 1.1
GC3
 Lisp source code Golden Common Lisp 1.3
GCA
 IBM GOCA GCGW
GCD
 Graphics
GCD
 General content descriptor Wireless devices
GCF
 Game cache file Steam content delivery system
GCX
 Graph file macOS Grapher
GD3
 Game Doctor Super NES ROM image
GDF
 General Data Format for Biomedical Signals Biomedical signal processing, Brain Computer Interfaces
GDF
 Dictionary file GEOS
GDF
 Geographical Data Format Various mapping software
GDF
 IBM Graphics Data Format Legacy IBM systems
GDL
 Data ArchiCAD model
GDS
 McDonnell-Douglas Things
GE
 GEcho config file GEcho
GED
 GEDCOM Genealogy data exchange
GED
 EDITOR's native file format Arts & Letters
GED
 GoldED for DOS compiled config file GOLDED.EXE
GED
 Graphics editor file EnerGraphics
GED
 Game Editor Data / project file Game Editor
GEM
 Vector graphics file GEM - Ventura Publisher
GEN
 Compiled template dBASE Application Generator
GEN
 Generated text Ventura Publisher
GEO
 Geode Geoworks
GEO
 GEOS specific file (application) GEOS
GEO
 GoldED for OS/2 compiled config file GED2.EXE
GEX
 GEcho config file GEcho
GFB
 Compressed GIF image created by GIFBLAST gifblast.exe
GFO
 SGI Radiosity
GFT
 Font NeoPaint
GFT
 GEM-translator font file
GFX
 Instant Artist graphics Files Instant Artist
GFX
 PCBoard @X-coded colorful text GFX2COM - GFX2EXE
GHO
 Norton Ghost File (first file) Symantec
GHS
 Norton Ghost File (split file) Symantec
GHW
 GHDL Wave file GHDL/GTKWave data file
GIB
 Chart Graph-in-the-Box
GIB
 GIMP animated brush
GID
 Help index Windows 95 help
Compuserves' Graphics Interchange Format QPeg - Display - CompuShow 画像
GIW
 Presentation Graph-in-the-Box for Windows
GKH
 Ensoniq Disk Image (VFX, SD, EPS, ASR, TS) Ensoniq
GKS
 Graphics Kernel System
GL
 Animation format grasprt.exe, PV
GL
 Animation GRASP GRAphical System for Presentation
GLB
 Global module in Basic programs
GLM
 Datafile Glim
GLO
 Global module in Basic programs
GLS
 Datafile Across
GLY
 Windowsword Glossary Microsoft Word
GM6
 Game Maker Editable file as of version 6.x
GMD
 Game Maker Editable file up to version 5.x
GMF
 CGM graphics file APPLAUSE
GMK
 Game Maker Editable file as of version 7.x or 8.x
GML
 Game Maker GML file
GMOD
 Data Golgotha 3D model
GMP
 Geomorph tile map SPX
GMS
 Ghost Mouse Script
GMS
 Gesture and Motion File Formats
GMT
 data RFactor car physics
GOC
 Goc source code file Geoworks
GOE
 GOES graphic file
GOH
 Goc header file Geoworks
GP5
 Guitar Pro 5 song Guitar Pro 5
GP
 Geode parameter file Geoworks Glue
GP4
 data Grand Prix 4 car physics
GPH
 Graph Lotus 1-2-3/G
GPK
 Omnigo program package
GPS eXchange Format
GR2
 Screen driver Windows 3.x
GRA
 Datafile SigmaPlot
GrADS
 Metafile
GRAFFLE
 OmniGraffle graph file
GRASP
 Graphical System for Presentation
GRB
 T-FLEX CAD file Top Systems
GRB
 MS-DOS Shell Monitor file MS-DOS 5
GRD
 Drivers for GRX (graphics library) GRX (c) Free Soft. Found.
GRDNT
 一部のオペレーティングシステムで使用されるイメージ形式
GRE
 data Grenoble Thermal Ellipsoids Plot Program
GRF
 Graph file Graph Plus - Charisma
GRIB
 Gridded Binary
GRN
 Drivers for GRX (graphics library) GRX (c) Free Soft. Found.
GRP
 Group file Windows 3.x - Papyrus
GRP
 Pictures group PixBase
GRY
 Graphics format (RAW GREYz)
GS1
 Presentation GraphShow
GS3
 data GameStarter
GSA
 data Microsoft Office Groove Space Archive
GSD
 Vector graphics Professional Draw
GSM
 Raw GSM 6.10 audio stream AWAVE 音声
GSW
 Worksheet GraphShow
GTA
 data Microsoft Office Groove Tool Archive
GUP
 PopMail
GV
 GrandView outline file
GVO
 Data GFXFX Vector Object
GWI
 Groupwise File Local saved Email
GXL
 Graphics library Genus
圧縮ファイル GNU zip - WinZipNT
GZR
 data GunZ action replay
H!
 On-line help file Flambeaux Help! Display Engine
H!
 Pertext database HELP.EXE
H--
 C—language header Sphinx C--
H
 ヘッダファイル（C言語またはC++、主にC） Watcom C/C++
H++
 ヘッダファイル (C++) C++
HA
 Archive HA
HAL
 Data file Hyper Access Lite OS/2
HAM
 Disk Drivers NPA Novell NetWare
HAM
 Hold And Modify Deluxe Paint image file
HAP
 Archive HAP3
HBC
 Compressed Archive File (Shrink Algorithm) Hyperbac
HBC
 Compressed Archive File (Shrink Fast Algorithm) Hyperbac
HBE
 Compressed, Encrypted Archive File (Shrink & AES256-bit Encryption) Hyperbac
HBK
 MathCAD handbook MathCAD
HC
 Header file
HCG
 Document HCLab
HCGS
 Document HCLab
HDD
 data disk image
HDD
 HotDisc Designer label
HDF
 Amiga Hard Disk Image
HDF
 Help file Help Development Kit
HDF
 Hierarchical Data File graphics file SDSC Image Tools
HDL
 Alternate download file listing Procomm Plus
HDMP
 heap dumpfile
HDR
 Datafile Egret
HDR
 Message header text Procomm Plus - 1st Reader
HDR
 PC-File+ Database header
HDR
 SPOT image file
HDS
 Hierarchical Data System
HDW
 Vector graphics Harvard Draw
HDX
 Help index AutoCAD - Zortech C++
HDZ
 Amiga Zip compressed Hard Disk Image
HEP
 Novell Help Librarian Data File Novell NetWare
HEX
 Hex dump
HEX
 Intel HEX リンケージエディタの出力形式、ROMライタ
HFI
 HP Font Info file GEM
HGL
 Highlight groups definitions DN
HGL
 HP Graphics Language graphics file
HH
 C++ header file
HHH
 Precompiled header file Power C
HHP
 Help information for remote users Procomm Plus
HI
 Game high scores table
HIN
 Molecule HyperChem
HIS
 History of executing/viewing/editing DN
HIS
 Yard Information File FYM
HKMHKM
 Stores sound in a bitmapped graphics file
HLB
 Help library VAX
HLP
 Help file WinHelp, Help Explorer Viewer
HLX
 Multi Edit help file MultiEdit 5.0
HLZ
 Multi Edit packed help file MultiEdit
HMI
 Music format (MIDI)
HMM
 Alternate Mail Read option menu Procomm Plus
HMP
 Music format (MIDI)
HMP
 Hump Setup File FYM
HNC
 CNC program files Heidenhain (?) dialog
HOF
 Hall Of Fame (game scores)
HP
 Printout file for HP printers/plotters (HP/GL)
HP8
 ASCII text HP Roman8 character set NewWave Write
HPF
 HP LaserJet fonts PageMaker
HPG
 see HPGL
HPGL
 Plotter file vector graphics (Hewlett-Packard Graphics Language) AutoCad - Harvard Graphics
HPI
 Font information file GEM
HPJ
 Help project Microsoft Help Compiler for Windows - HC.EXE
HPK
 Archive HPACK
HPM
 Alternate Main menu for privileged users Procomm Plus
HPM
 EMM text HP NewWave
HPM
 High Performance Map Quaestor 1.x
HPP
 ヘッダファイル (C++) GCCなど
HPPCL
 Hewlett-Packard Printer Control Language
HQ
 HQ9+ source HQ9+
HQX
 Archive (ASCII Mac) BINHEX
HRF
 Graphics file (Hitachi Raster Format)
HRM
 Alternate Main menu for limited/normal users Procomm Plus
HRZ
 Graphics format SSTV
HS2
 Monochrome image Postering
HSC
 2-op FM music HSC tracker - hscplay.exe
HSH
 Disk image hash file DriveSnapshot
HSI
 Handmade Software Inc. graphics file almost JPEG Image Alchemy
HST
 History file Procomm Plus
HTM
 see HTML
Hypertext Markup Language (WWW) Netscape - Mosaic - many
HTX
 Hypertext file
HWD
 Presentation Hollywood
HWP
 Hangul Word Processor Document Hangul (word processor) 文書
HXM
 Alternate Protocol Selection menu for all users Procomm Plus
HXS
 Microsoft Help 2 compiled help file Microsoft Windows, Help Explorer Viewer
HXX
 C++ header file
HY1
 Hyphenation algorithms Ventura Publisher
HY2
 Hyphenation algorithms Ventura Publisher
HYC
 Data WordPerfect
HYD
 Hyphenation dictionary WordPerfect for Win
HYP
 Archive HYPER
I
 Preprocessor output file Borland C Preprocessor
IAK
 Internet Access Kit OS/2
IAM
 Assembly file Autodesk Inventor
IAX
 Bitmap graphics (IBM Image Access eXecutive)
IAX
 data InstallAnywhere.NET project
IBG
 PDS graphic file
IBM
 Archive (Internal IBM only) ARCHDOS
ICA
 Bitmap graphics (Image Object Content Architecture)
ICB
 Bitmap graphics
ICC
 ICC configuration
ICE
 Archive Cracked LHA (old LHA)
ICM
 ICC configuration
ICN
 ICON source code file
ICO
 Icon file ICONEDIT.EXE; Microsoft Windows
ID
 Disk identification file
IDB
 IDA database IDA
IDB
 VC++ Minimum Rebuild Dependency File Visual C++
IDC
 IDA C language source IDA
IDE
 Borland C++ 4.x IDE project BCW.EXE
IDF
 MIDI instrument description
IDS
 IDA imported names format IDA
IDW
 Vector graphics IntelliDraw
IDW
 Drawing file Autodesk Inventor
IDX
 Index many - FoxPro; also unrelated Quicken file format.
IFD
 Form JetForm Design
IFF
 Interchange Format File (IFF) EA Software - Convert (C) Villena - Amiga
IFF
 Sun TAAC Image File Format SDSC Image Tool
IFP
 Script KnowledgeMan
IFS
 Fractal image compressed file Yuvpak
IFS
 Installable file system OS/2
IGES
 Initial Graphics Exchange Specification
IGF
 Inset Systems GCGW
IGC
 ダウンロード形式 Flight tracks
IHP
 Watcom help file whelp.exe
IHS
 Inbound History Bink/+
IIW
 Power Point Image Importer Wizard
IL
 hDC Designer Icon Lin dll format
ILB
 Data Scream Tracker
ILG
 data LaTeX Index Generation log
ILK
 Outline of program's format Microsoft ILink incremental linker
IM
 Auran Jet indexed mesh file Trainz
IM8
 Sun raster graphics file
IMA
 Mirage vector graphics EGO - Chart - Autumn
IMG
 ADEX graphic file
IMG
 Disk Image NC 5.0
IMG
 GEM bitmapped graphics file Ventura
IMG
 Image for Windows/Image for DOS Disk image TeraByte, Inc. dba TeraByte Unlimited
IMG
 Vivid IMG file
IMI
 image Magellan Meridian map
IMI
 image Magellan eXplorist map
IMP
 Spreadsheet Lotus Improv
IMQ
 Image presentation ImageQ
IN$
 Installation file HP NewWave
IN3
 Input device driver Harvard Graphics 3.0
INB
 Test script Vermont HighTest
INC
 Include file several programming languages
IND
 Data Index dBASE IV
INDD
 InDesign Document Adobe InDesign
INF
 Information text file (ASCII)
INF
 Install script
INF
 OS/2 hypertext help system file VIEW.EXE
INF
 Type 1 LaserJet font information file soft font installers
INFO
 GNU info reader (output from texinfo) unix
INFO
 Icon Data (Amiga)
INGR
 Intergraph Raster File Format
Initialization file
INK
 Pantone reference fills file CorelDRAW
INS
 Data WordPerfect
INS
 Ensoniq Instrument File Ensoniq
INS
 Installation script 1st Reader
INS
 Instrument music file (Adlib)
INT
 Borland Interface Units
INT
 Program saved in Internal (semi-compiled) format Signature
INT
 Source of Borland interface module
INX
 Index Foxbase
IO
 Archive CPIO
IOB
 3d graphics database in TDDD format
IOC
 Organizational chart Instant ORGcharting!
ION
 4DOS descript.ion file (file descriptions) 4DOS
IP
 Immortal Player file Immortal Player
IPC
 Intellitec Program Configuration Intellitec
IPF
 Interchangeable Preservation Format SoftPres
IPG
 iPod game file iTunes and iPod
IPH
 Hi-Res Image InterPaint
IPL
 Pantone Spot reference palette file CorelDRAW
IPN
 Intecplan project Intecplan Business Plan Software
IPS
 IPS Patching Format (International Patching System) Rom hacking community
IPT
 Part file Autodesk Inventor
IPT
 MultiColor Image InterPaint
IRS
 Resource (WordPerfect) standard.irs WordPerfect
IRT
 Data IRIT 3D model
IRTR
 Graphicon-2000 Interactive Real-Time PHIGS
ISD
 Spelling Checker dictionary RapidFile
ISH
 Archive ISH
ISMA
 Output Video file Islam Abusa'a Software
ISO
 ISO-9660 table see: List of ISO image software
IST
 Digitrakker Instrument File AWAVE
IT
 Impulse Tracker music file Impulse Tracker
IT
 Settings intalk
ITF
 Interface file JPI TopSpeed Pascal
ITL
 iTunes music library
ITN
 Itinerary file TomTom PNDs
ITT
 IconTweaker Theme
IV
 SGI Inventor
IV-VRML
 Inventor VRML Format
IVE
 OpenSceneGraph 3D model
IVI
 Image file ImmerVision
IVL
 Lensflare file ImmerVision
IVP
 Panorama file ImmerVision
IVU
 User Interface file ImmerVision
IW
 Presentation flowchart IconAuthor - HSC InterActive
IWA
 Text file IBM Writing Assistant
IWD
 Call of Duty Map - Game Data Archive Activision, Inc.
IWP
 Text file Wang
IX
 data dtSearch index
IZT
 Izl binary token file IZL
J2C
 JPEG 2000 image 多数 画像
JAM
 Jam messagebase FTN software
Jam music score Jam
JAR
 アーカイブ JAR. Java Games and Applications
JAS
 see JASC
JAS
 Cheetah3D ファイル形式 Cheetah3D
JASC
 Graphics format (JASC)
JAV
 「JAVA」を参照。
JAVA
 Java ソースコード
JBD
 Datafile SigmaScan
JBIG
 Joint Bilevel Image Group
JBW
 ワープロファイル 一太郎 V6 文書
JBX
 Project file Project Scheduler 4
JCN
 JobClock.Net Synch File
JET
 Fax Hybrid JetFax
JFF
 see JFIF
JFIF
 JPEG File Interchange Format
JIF
 see JFIF
JMS
 Music format (JMusic file) UltraForce
JOB
 Gravostyle engraving pattern file Gravostyle/Gravograph
JOB
 QUEUE output file RT-11
JOR
 Journal file SQL
JOU
 Journal backup VAX Edt editor
JP2
 JPEG 2000 image 多数 画像
JPC
 画像 Japan PIC 画像
Joint Photography Experts Groupファイルフォーマット 多数 画像
JPG
 JPEGを参照 多数 画像
JRE
 Java Runtime Environment Java
JRN
 JMP journal JMP
JSP
 Java Server Pages
JS
 JScriptスクリプトファイル Javascript
JTD
 文書ファイル 一太郎 文書
JTF
 Fax Hayes JT Fax
JTF
 Graphics (TIFF file with JPEG compression)
JK
 Root File of a lol Earl Grey
JVX
 Data JavaView object
JW
 Text document JustWrite
JWL
 Library JustWrite
JZZ
 Spreadsheet Jazz 表計算
K2A
 Data Prince of Persia 3D object
K3D
 Description of macro language 3DS 3DS
KAP
 Map Info Sea Chart
KAR
 Music format (Karaoke)
KAR
 Precompiled .prg for KARAT Rus. FOX+ 2.0
KB
 Keyboard script Borland C++ 4.5
KB
 Program source Knowledge Pro
KBASIC
 Source KBasic
KBD
 Keyboard mapping LocoScript - Signature - Procomm Plus
KBM
 Keyboard mapping Reflection 4.0
KCL
 Lisp source code Kyoto Common Lisp
KDB
 KeePass 1.x database file KeePass
KDBX
 KeePass 2.x database file KeePass/KeePassX/KeePassXC
KDC
 Kodak Digital Camera (graphics) PhotoEnhancer by PictureWorks
KEP
 (unknown) (unknown)
KEX
 Kedit Macro File Kedit
KEY
 Datafile Forecast Pro
KEY
 Keynote presentation file Keynote (Apple iWork '08)
KEY
 Keyboard macros
KEY
 OS/2 archive .key-file (i.e. OS2.KEY) OS/2
KEY
 Security file e.g. Shareware Registration info
KFX
 Kofax Group GCGW
KIT
 Power Chords drum kit file Power Chord
KMC
 KatzReview's MegaCrammer
KML
 Kedit Macro Library / Keyhole Markup Language Google Earth
KMY
 data KMyMoney
KMZ
 Keyhole Markup Language (Zip compressed) Google Earth
Knn
 Database key file Clarion
KNO
 Personal Knowbase data file Personal Knowbase
KPL
 source code Phrogram
KPP
 Toolpad SmartPad
KPS
 IBM KIPS bitmap graphics
KR1
 Kurzweil 2000 sample file AWAVE
KR2
 Kurzweil 2000 sample file AWAVE
KRZ
 Kurzweil K2000 File Kurzweil
KS
 Source code KonsolScript
KS3
 Data 3D Forgastest Editor object
KTU
 Know The Unknown Online Service Packs Unknownsoft
KYB
 Keyboard mapping FTP Software PC/TCP
L
 LEX source code file
L
 Linker directive file WATCOM wlink
L
 LISP source code file
LA0
 Datafile SCUMM index file
LAB
 Datafile NCSS - SOLO
LAB
 Mailing labels Q+E for Microsoft Excel
LAN
 Erdas image file
LAN
 LAN Drivers Novell NetWare
LAY
 Word chart layout APPLAUSE
LBG
 Label generator data dBASE IV
LBL
 Label dBASE IV - Clipper 5 - dBFast
LBM
 Graphics format (Amiga) Pic-view - Deluxe Paint
LBM
 Linear bitmap graphics XLib
LBO
 Compiled label dBASE IV
LBR
 .LBR Archive forCP/M and MS-DOS using the LU program
LBR
 Display driver Lotus 1-2-3
LBT
 Additional (FPT) label description file FoxPro
LBX
 Main (DBF) label description file FoxPro
LCF
 Linker Control File Norton Guides compiler
LCH
 Chart IBM Works for OS/2
LCK
 Lockfile Paradox
LCL
 Data (FTP Software PC/TCP)
LCL
 Data FTP Software PC/TCP
LCN
 Lection WordPerfect
LCS
 Datafile ACT! History Files
LCW
 Spreadsheet Lucid 3-D
LD
 Long Distance codes file Telix
LDA
 Absolute binary file (load image) PDP-11, RT-11
LD1
 Overlay file dBASE
LDB
 Data filer database IBM Works for OS/2
LDB
 Overlay file Microsoft Access
LDF
 Data filer form IBM Works for OS/2
LDF
 Library definition file Geoworks Glue
LE
 DOS/4GW executable image DOS/4GW PM 32X DOS Extender
LES
 Lesson (check *.cbt)
LEV
 Level file NetHack 3.x
LEX
 Dictionary Microsoft Word - Lexicon
LFL
 LucasArts resource file
LFD
 LucasArts resource file LucasArts games
LFT
 Laser printer font ChiWriter
LG
 Logo procedure definitions LSRHS Logo
LGO
 Logo for header and footer SuperFax
LGO
 Startup logo code Windows 3.x
LHA
 Archive LHA/LHARC
LHW
 Amiga archive LHWARP
LIB
 Library file several programming languages
LIC
 ライセンスファイル 多数 文書
LIF
 アーカイブ アーカイブ
LIF
 CA Clipper packed file CA Clipper installer
LIF
 Logical Interchange Format data file Hewlett-Packard
LIM
 Archive LIMIT
LIN
 Line types AutoCAD
LIS
 Listing VAX
LIT
 Web3D File Web3D
LIX
 Log file (history) Audit Command Language (ACL)
LJ
 Text file for HP LJ II printer
LL3
 LapLink III related file (document) LapLink III
LM
 Auran Jet LOD mesh table Trainz
LMP
 Demo for Doom (computer 3d game) Doom - Doom2
LNG
 Language definition file
LNK
 Linker response file .RTLink
LNK
 Linker script
LNK
 Windows 95 shortcut Windows 95
LNK
 Windows XP shortcut Windows XP
LOD
 Load file
LOG
 Log file Numerous systems
LOM
 3D Model Lock On: Modern Air Combat
LPC
 Printer driver TEKO
Lyrics data
LRF
 Linker response file Microsoft C/C++
LRF
 Unencrypted BroadBand eBook file Sony Librie eBook reader
LRP
 Report IBM Works for OS/2
LRS
 Language Resource File WordPerfect for Win
LRX
 Encrypted BroadBand eBook file Sony Librie eBook reader
LSA
 Lightscape Technologies ASCII
LSB
 Lightscape Technologies Binary
LSP
 LISP source code file Xlisp, AutoLISP
LSS
 Spreadsheet Legato - IBM Works for OS/2
LST
 Aus. BOM Hourly weather Data
LST
 Filelist FRQView
LST
 Keyboard macro 1st Reader
LST
 List file (archive index - compiler listfile)
LST
 Listing (e.g. source code)
LST
 Map list Holux - Alan
LST
 Spool file Oracle
LST
 SLP output file RT-11
LTA
 Data LithTech ASCII 3D object
LTM
 Form (Lotus Forms) Lotus
LUA
 Lua script file Microsoft Visual C++, Notepad++
LWD
 Text document Lotus Works 文書
LWO
 Lightwave Object Format
LWP
 Word processor IBM Works for OS/2, Lotus Wordpro 文書
LXF
 Lego Exchange Format Lego Digital Designer data file
LXT
 Temporal database file GTKWave data file
LY
 LilyPond Notation File LilyPond
LYR
 Lyrics (ASCII)
LZ
 Archive Lzip
LZD
 Difference file for binaries LDiff 1.20
LZH
 アーカイブ LHA/LHARC アーカイブ
LZS
 アーカイブ LARC アーカイブ
LZW
 アーカイブ LHWARP アーカイブ
LZX
 Amiga アーカイブ LZX アーカイブ
M
 MATLAB M-File MATLAB
M3U
 M3U playlist file Winamp, XMMS
M3U8
 Unicode version of M3U playlist file (UTF-8) Winamp, XMMS
M4A
 Advanced Audio Coding
M7P
 Multilizer 2007 and 2009 localization project file Multilizer
MAG
 MAGフォーマット マルチペイント、他 画像
MAI
 Mail VAX
MAK
 Makefile
MAK
 Project file VB - VC ++
MAKI
 画像 MAKIちゃんローダー、他 画像
MAN
 User guide (manual)
MAP
 Color palette file
MAP
 Format data Micrografx Picture Publisher
MAP
 Linker map file
MAP
 Map file (usually created by compilers)
MAP
 Map Atlas MapMaker
MAP
 Network map AccView
MAP
 Game map for Duke Nukem 3D
MAR
 Assembly program VAX Macro
MAR
 Microsoft ARchive MSN Explorer (possibly other Microsoft products too)
MAR
 Mozilla ARchive Mozilla Updater (used to house binary updates to products)
MAS
 SmartMaster set Freelance Graphics
MAT
 Data MATLAB
MAX
 MAX source code file
MB
 Memo field values for database Paradox
MBK
 Multiple index file backup dBASE IV
MBX
 Mailbox data Eudora/ZERBERUS
MCC
 Configuration file Mathcad
MCD
 MathCad file MathCad
MCF
 Font file Mathcad
MCF
 Photo book or photo calendar layout file FotoInsight Designer
MCF
 Multimedia Container Format (predecessor of Matroska)
MCI
 MCI command script Media Control Interface
MCL
 Multi Edit macro library Multi Edit
MCL
 Cartesian manipulator for laser systems
MCP
 Application script Capsule
MCP
 Printer driver Mathcad
MCW
 Text file MacWrite II
Quake 1 Model File id Software
Quake 2 Model File id Software
Quake 3 Model File id Software
Doom 3 and Quake 4 Model File id Software
MD
 Archive mdcd10.arc
MDA
 Data Microsoft Access
MDA
 Microsoft Access system database Microsoft Access
MDB
 Microsoft DataBase Microsoft Access データベース
Several uses
MDL
 Model 3D Design Plus or Simulink
MDL
 Spreadsheet CA-Compete!
MDM
 Modem definition file TELIX
MDMP
 Mini dumpfile
MDR
 Microdrive file ZX Spectrum emulator by g.a.lunter
MDS
 Midi Session Sound Imp.
MDT
 Data table Microsoft ILink incremental linker
MDX
 Multiple index file dBASE IV
MDZ
 Text description of music module Cubic Player - Cross-View
ME
 MultiEdit configuration MultiEdit
ME
 Text file READ.ME
MEB
 Macro Editor bottom overflow file WordPerfect Library
MEC
 MECCA source Maximus
MED
 Macro Editor delete save WordPerfect Library
MED
 Music format MED/OctaMED
MEM
 Macro Editor macro WordPerfect Library
MEM
 Memory variable save file dBASE IV - FoxPro - Clipper
MEM
 Memos datafile Clarion
MEQ
 Macro Editor print queue file WordPerfect Library
MER
 Macro Editor resident area (vakioalue) WordPerfect Library
MES
 Macro Editor work space file WordPerfect Library
MES
 Message
MET
 Document Omnipage Pro
MET
 Macro Editor top overflow file WordPerfect Library
MET
 OS/2 graphics metafile PICVIEW.EXE
MEU
 Menu group DOS Shell
MEX
 Macro Editor expound file WordPerfect Library
MEX
 MEX file (executable command) Matlab
MF
 Metafont file TeX
MFA
 Source code file Multimedia Fusion 2 / The Games Factory 2
MFF
 MIDI Cakewalk, MTPro 4
MFM
 Music format DMP
MGF
 Font Micrografx
MGF
 Materials and Geometry Format
MGX
 Designer 4.1 Drawing Designer 4.1
Web Archive Single File
MIB
 Snmp MIB file
Standard MIDI file music synthetizers, Winamp
MIDI
 See MID
MIFF
 Magick Image File Format
MII
 Datafile MicroStat-II
MIME
 Message in MIME format (RFC822)
MIO
 MyInfo topic Milenix MyInfo
MIS
 Mission, used by many games
MIX
 Object file Power C
MK
 Makefile
MK
 Makefile
MK
 Usually makefile
MKE
 Makefile Microsoft Windows SDK
MKG
 Makefile
MKI
 Graphics format (Japan MKI)
MKI
 Japanese graphics MAKIchan format MagView 0.5
MKS
 Data TACT
MKV
 Matroska Multimedia Container Media Player Classic, Windows Media Player, Matroska Splitter
ML3
 Project Milestones 3.x
MLB
 Macro library file RT-11, Symphony
MLI
 3DS Materials Libraries 3D Studio
MLRAW
 Data Moonlight Creator RAW format 3D object
MLV
 LabVIEW MathScript
MM
 Text file MultiMate Advantage II
MMF
 Mail message file Microsoft Mail
MMM
 Multimedia movie file, RIFF RMMP format MacroMind Director 3.x
MMO
 Memo writer file RapidFile
MMP
 Output video format from Bravado board
MND
 Menu source AutoCAD Menu Compiler
MNG
 Map DeLorme Map'n'Go
MNT
 Additional (FPT) menu description file FoxPro
MNT
 Menu memo FoxPro
MNU
 Advanced macro file HP NewWave
MNU
 Menu AutoCAD Menu Compiler - Norton Commander - Signature
MNU
 Microsoft Mouse menu (for DOS apps)
MNX
 Compiled menu file AutoCAD
MNX
 Main (DBF) menu description file FoxPro
MNY
 Account book Microsoft Money
MO?
 Packed mail FTN software
MOB
 Device definition file PEN Windows
MOBI
 eBook Mobipocket
MOD
 Modula language source
MOD
 MODULA-2 source code file Clarion Modula-2
MOD
 モジュールファイル Windows
MOD
 Music format (Amiga module) DMP - ST - MDP - VP
MOL
 MOD4WIN PlayList Mod4Win
MOL
 MDL Molfile RasMol
MOL2
 Tripos’ Sybyl MOL2 Format SYBYL, RasMol
MON
 SYSGEN monitor build procedure RT-11
MON
 Monitor description ReadMail
MOP
 MOPAC input file MOPAC, RasMol
MOT
 Motorola S-record リンケージエディタの出力形式、ROMライタ
MOV
 Animation format (Mac) QuickTime
MOV
 Movie file AutoCAD AutoFlix
MP2
 Mpeg audio file Winamp, xing
MPEG オーディ オストリーム, レイヤー3 AWAVE, CoolEdit(+PlugIn), Winamp 音声
multimedia container format, MPEG 4 Part 14 Winamp 音声
MPA
 MPEG audio stream, layer 1,2,3 AWAVE 音声
MPC
 Calendar file Microsoft Project
MPC
 Musepack audio 音声
multimedia containter format, video, audio MPEG Player, Winamp 音声/動画
MPG
 MPEGを参照 音声/動画
MPKG
 Multipackage installer script macOS
MPL
 MediaRack Midi Playlist MediaRack
MPM
 MathPlan macro WordPerfect Library
MPO
 JPEG Multi-Picture Object（英語版） ステレオカメラ、ニンテンドー3DS 画像
MPP
 Project file Microsoft Project
Mo'PaQ Archive Blizzard games
MPR
 Generated executable menu file FoxPro
MPR
 Multilizer 5.x and 6.x localization project file Multilizer
MPT
 Bitmap graphics (Multipage TIFF)
MPV
 View file Microsoft Project
MPX
 Compiled executable menu file FoxPro
MPX
 Video format
MPZ
 Miradi Project Zipfile Miradi
MRB
 Multiple Resolution Bitmap graphics file Microsoft C/C++
MRC
 mIRC file mIRC
MRK
 Windows User Benchmark Windows 95
MRS
 Macro Resource file WordPerfect for Win
MS
 Microsoft antivirus report MSAV
MSC
 Microsoft C makefile
MSC
 management saved console[2] Microsoft; Microsoft MMC[3]
MSI
 Windows Installer Package Windows Operating Systems
MSDL
 Manchester Scene Description Language
MSG
 Message base (e.g. HMB)
MSG
 Message text file (ASCII)
MSG
 ZVoice digitized voice file
MSE
 Set file Magic Set Editor
MSO
 Microsoft Word OLE Web Page Storage Stream Microsoft Office
MSO
 Microsoft Outlook metadata for a Microsoft Word 2000 email attachment.[4] Microsoft Outlook
MSP
 Bitmap graphics file Microsoft Paint
MSP
 Graphics format Microsoft Paint
MSPRODUCER
 Media Project Microsoft Producer (for Microsoft PowerPoint XP/2003) Project
MSQM
 data Microsoft Message Queuing
MSN
 Project National Instruments for NI MultiSim-Electronic Circuit simulator
MSS
 Manuscript text file Perfect Writer - Scribble - MINCE - Jove
MST
 Document MS Test
MST
 Minispecification file Prosa
MST
 Setup script file Microsoft Windows SDK
MSW
 Text file Microsoft Word
MSX
 CP/M archive MSX
MTH
 Math file Derive
MTL
 Wavefront
MTM
 Music format MultiTracker
MTS
 Master Track Pro Files MTPro 4
MTS
 data F1 2001, F1 2002 and F1 Challenge 1999 - 2002 car physics (All from the EA Sports F1 Series)
MTV
 MTV Ray Tracer graphic file
MTW
 Datafile Minitab
MU
 Quattro pro for DOS Menu definition file Quattro Pro
MUS
 Finale music document. Finale
MUS
 Music format (MIDI in Doom)
MUS
 Sound file MusicTime
MUZ
 Hover Game MIDI File Windows' Hover! Game [5]
MVF
 Stop frame file AutoCAD AutoFlix
MVI
 Movie command file AutoCAD AutoFlix
MVO
 Data Mad Virgin 3D object
MVW
 Log file Saber LAN
MWF
 Animation ProMotion
MWS
 MWave DSP synths instrument AWAVE
Material exchange format (RFC 4539, SMPTE 377M)
MXL
 PackRat 5.0 support DLLs PackRat 5.0
MXM
 Material Maxwell Render
MXP
 Adobe Extension File Adobe Dreamweaver and Adobe Flash
MXP
 3ds Max Configuration File 3ds Max
MXP
 MasterCook exported recipe
MXT
 Data Microsoft C
MYP
 Presentation MM Make Your Point
MZ
 Binary-format Map MazeEdit
MZE
 Text-format Map MazeEdit
MZG
 Binary-format Map Collection MazeEdit
MZX
 Binary-format Encrypted Map MazeEdit
NAM
 Name Space Modules Novell NetWare
NAP
 Naplps file (VideoShow) EnerGraphics
NAPLPS
 North American Presentation Layer Protocol Syntax
NB
 Text file Nota Bene
NB
 Wolfram Mathematica Notebook Mathematica
NBF
 Nokia Backup File Nokia Mobile Phones
NC
 Graphics netcdf
NC
 Instructions for NC (Numerical Control) machine CAMS
NC
 Non-error checking preprosessed Goc source code Geoworks
NCC
 CNC (Computer Numeric Control) control file CamView 3D
NCD
 Norton Change Directory support file Norton Commander
NCP
 Re-volt Collision file Re-volt
NDB
 Network database Intellicom - Compex
NDS
 ROM file 任天堂 DS
NDL
 Nodelist file
NDX
 Index file dBASE II - III - IV - dBFast
NEO
 Raster graphics file Atari Neochrome
NES
 iNES ROM image format
NET
 Network configuration/info file
NEU
 Pro/Engineer neutral file format PTC Pro/Engineer
netCDF
 Network Common Data Format
NEW
 New info
NFF
 Haines Neutral File Format
NFF
 WorldToolKit Neutral File Format
NFO
 Folioview database
NFO
 Help format Nextpage Folio
NFO
 Info file Compact NFO Viewer
NG
 Hypertext Database Norton Guide
NGO
 NG linker object file NGML
NGS
; 		NG compiler source file NGC
NIF
 netimmerse/gamebyro file
NIL
 NIL Icon Hear-It
NITF
 National Imagery Transmission Format
NK2
 e-mail address autocomplete archive Microsoft Office Outlook
NL
 Norton Desktop Icon Library
NLM
 Netware loadable module Novell Netware
NLS
 National Language Support file MS-DOS
NLX
 Form FormWorx 3.0
nnn
 Arj archive volumes up to 999 ARJ
nnn
 Netware unicode rule table Novell Netware
nnn
 News about smth with ext. of ver. number
nnn
 RAR archive volumes up to 999 RAR
NOMEDIA Android Nomedia Format[6] Google Android
NOT
 Notation
NOT
 Yard Notes File FYM
NP
 Project schedule (Nokia Planner) Nokia Planner
NPI
 Source for DGEN.EXE interpreter dBASE Application Generator
NPJ
 Nile Project Game Mission Editor
Nero Disc Image File Nero Express / Burning ROM
NRW
 Nikon Coolpix RAW image Nikon
NSA
 media Nullsoft Streaming Audio
NSF
 database Lotus Notes
NSS
 Norton screensaver module NC - NDW Screen Saver
NST
 Music module Amiga Noise Tracker
NSV
 media Nullsoft Streaming Video
NSX
 Compound index file SuccessWare SIX 3.00
NT
 Startup files Windows NT
NTF
 database design template Lotus Notes
NTH
 Nokia Theme File Nokia PC Suite
NTR
 Executable ASCII text file netrun31.zip
NTS
 Executable ASCII text file netsend1.zip
NTS
 Tutorial Norton
NTX
 Database index file Clipper 5
NUF
 Message for new users on their 1st call Procomm Plus
NUMBERS
 Numbers spreadsheet file Numbers (Apple iWork '08)
NWS
 Info text file (latest news) (ASCII)
NXT
 Sound (NeXT format)
O$$
 Outfile Sprint
O
 オブジェクトファイル UNIX - Atari - GCCなど
O01
 Typhoon vOice file AWAVE
OAZ
 Fax NetFax Manager
OB
 Object cut/paste file IBM LinkWay
OBD
 Microsoft Office Binder MSOffice
OBJ
 Compiled machine language code Visual C++など
OBJ
 Wavefront Object
OBJF
 Data Triangle strips object
OBR
 Object browser data file Borland C++
OBS
 Script ObjectScript
OBT
 Microsoft Office Binder Template MSOffice
OBV
 Visual interface ObjectScript
OBZ
 Microsoft Office Binder Wizard MSOffice
OCF
 Object Craft File Object Craft
OCD
 OCAD Map File OCAD
OCR
 Incoming fax transcribed to text FAXGrapper
OCT
 Musical file Pctalizer
OCX
 New Custom Control's format in VB 4.0 Visual Basic
OCX
 OLE custom control
ODB
 OpenDocument database OpenOffice.org Base データベース
ODF
 OpenDocument formula OpenOffice.org Math
ODG
 OpenDocument drawing OpenOffice.org Draw
ODIF
 Open Document Interchange Format
ODL
 Object Description Language
ODL
 Type library source Visual C++
ODM
 OpenDocument master document OpenOffice.org Writer 文書
ODP
 OpenDocument presentation OpenOffice.org Impress
ODS
 OpenDocument spreadsheet OpenOffice.org Calc 表計算
ODT
 OpenDocument text document OpenOffice.org Writer 文書
OFD
 Form definition ObjectView
OFF
 Object File Format vector graphics file
OFF
 Object File Format vector graphics
OFM
 PostScript font description file
OFN
 Microsoft Office documents Microsoft Office
Ogg multimedia container format 音声
OHB
 Source On Hand Basic
OHS
 Outbound History Bink/+
OIF
 QuickBase file format
OKT
 Music (8 channels) Oktalyzer
OKT
 Music format Oktalyzer
OLB
 Object library VAX
OLD
 Backup file
OLI
 Text file Olivetti
OLSR
 Configuration file olsrd
OMA
 Audio file Labelgate CD 2, MAGIQLIP2 音声
OOF
 Data Outrage 3D Object Format (Descent)
OOG
 Data WEBOOGL 3D object
OOM
 Swap file Shroom
OPJ
 Origin Project File Origin version 4.1 and later
OPN
 Active options Exact
OPT
 オプションファイル 多数
OPT
 Delphi project options Borland Delphi
OPT
 Optimize support file QEMM
OPW
 Organization chart Org Plus for Windows
OPX
 Inactive options Exact
ORA
 Parameter file Oracle
ORG
 Calendar file Lotus Organizer
ORG
 Older Origin Project Origin versions 4 or earlier
OTG
 OpenDocument drawing template OpenOffice.org Draw
OTB
 Over-the-air bitmap graphics
OTH
 OpenDocument HTML document template OpenOffice.org
OTL
 Outline font description Z-Soft Type Foundry
OTL
 Ventura Publisher's Type Foundry Outline Editor format
OTP
 OpenDocument presentation template OpenOffice.org Impress
OTS
 OpenDocument spreadsheet template OpenOffice.org Math
OTT
 OpenDocument text document template OpenOffice.org Writer 文書
OTX
 Text file Olivetti Olitext Plus
OUT
 Output file
OV1
 Overlay file (part of program to be loaded when needed)
OV2
 Overlay file (part of program to be loaded when needed) TomTom Point of Interest
OVD
 Datafile ObjectVision
OVL
 Overlay file (part of program to be loaded when needed)
OVR
 Overlay file (part of program to be loaded when needed)
OXT
 OpenOffice.org extension OpenOffice.org
P
 Database PROGRESS source code PROGRESS
P
 PASCAL source code file
P
 Parser source code file
P
 Picture file APPLAUSE
P
 Rea-C-Time application parameter file ReaGeniX code generator
P0?
 Split archive UC2 SAS.EXE
P10
 Tektronix Plot GCGW
P10
 Certificate Request
P12
 Personal Information Exchange "Crypto Shell Extensions"
P16
 Music (16 channels) ProTracker Studio 16
P22
 Patch file (Patch22) Patch22
P80
 PLM-80 source
P86
 PLM-86 source
p2v
 バックアップファイル plan2viz (windowsbased)
P3T
 PlayStation 3 Theme file PS3 Theme settings menu
PA1
 Worktable PageAhead
PAC
 SBStudio II Package or Song SBStudio II
PAC
 STAD Image (graphics ?)
PACK
PACKAGE
 Content The Sims 2
PAD
 Automatic print definitions Produa
PAD
 Keypad definition Telemate
PAF
 For Personal Ancestral File data files
PAGES
 Pages document file Pages (Apple iWork '08)
PAK
 Archive Pak
PAL
 Palette file Microsoft Draw - Win. Paintbrush - many
PAL
 Palette file Diablo II
PAN
 Printer-specific file (copy to coreldrw.ink) CorelDRAW
PAR
 Parameter file Fractint
PAR
 PARTS application Digitalk PARTS
PAR
 Permanent output file Windows 3.x
PAR
 Parity Archive
PAR2
 Parity Archive v2
PART
 Part of a download file
PAS
 Pascal language source Borland Pascal
PAT
 Gravis Ultrasound Patch Convert (c) Villena
PAT
 Hatch patterns AutoCAD - Photostyler
PAT
 Vector fill files CorelDRAW
PAT
 Pattern File Photoshop
PAT
 GIMP pattern
PB
 Fax FAXability Plus
PB
 Phonebook WindowsFax Pro
PB
 Proboard Conf. files Proboard
PB
 Setup file PixBase
PB1
 Document First Publisher for Windows
PBA
 Powerbasic BASIC source code Genus
PBD
 Phone book FaxNOW! - Faxit
PBD
 Molecule (protein data bank)
PBI
 Powerbasic include file Genus
PBI
 Profiler Binary Input Microsoft Source Profiler
PBK
 Microsoft Network Phone book MSN
PBL
 Powerbasic library Genus
PBM
 PBM Portable Bit Map graphics format Jasc Media C.
PBM
 Planar bitmap graphics XLib
PBO
 Profiler Binary Output Microsoft Source Profiler
PBT
 Profiler Binary Table Microsoft Source Profiler
PC
 Text file containing IBM PC specific info
PC3
 Custom palette Harvard Graphics 3.0
PC8
 ASCII text IBM8 character set NewWave Write
PCA
 Perfect Clarity Audio Sony Vegas Pro
PCB
 P-CAD database P-CAD, PCBExpress, その他の Printed Curcuit Board ソフトウェア
PCB
 Artwork design file (Circuit board design) Zuken CadStar
PCC
 Cutout picture vector graphics PC Paintbrush
PCD
 Graphics format (Kodak Photo-CD)
PCD
 Kodak Photo-CD Image graphics file (768x512) hpcdtoppm
PCF
 Pixel Coordination Format
PCH
 Patch file
PCH
 Precompiled header Microsoft C/C++
PCJ
 Multimedia authoring tool graphics file IBM's Linkaway-Live
PCK
 Pickfile Turbo Pascal
PCL
 HP-PCL graphics data file HP Printer Control Language
PCM
 OKI MSM6376 synth chip PCM AWAVE
PCM
 PCM Authorware
PCS
 Microsoft PowerPoint picture package Microsoft PowerPoint - Microsoft ClipArt Gallery
PCT
 Bitmap graphics file Macintosh b&w PICT1 - color PICT2
PCW
 Text file PC Write
PC paintbrush bitmap format QPeg - Display - ZSoft - PC Paintbrush
PDA
 Bitmap graphics
PDB
 Data TACT
PDB
 Packrat 5.0 data file Packrat 5.0
Molecule (protein data bank)
PDD
 Adobe Photoshop Elements Image Adobe Photoshop Elements
PDE
 Pathology Data Exchange
PDE
 data PowerDesk Encrypted
Adobe's Portable Document Format Adobe Acrobat Reader
PDF
 Graphics file (ED-SCAN 24bit format)
PDF
 Package Definition File
PDF
 PCAD Database Interchange Format Pdifin.exe - Pdifout.exe
PDF
 Print device information Netware
PDG
 Print Shop Deluxe data file
Portable Database Image
PDL
 Project Description Language file Borland C++ 4.5
Program Deskmate
PowerDesigner's physical data model (relational model) file format PowerDesigner
Visual Basic (VB) Project Information File Visual Basic
PDN
 Image file Paint.NET
PDS
 PALASM Design Description
PDS
 Pds graphics
PDS
 Planetary Data System Format
PDS
 Pldasm source code file (hardware assembly)
PDV
 Printer driver Paintbrush
PDW
 Document Professional Draw
PEB
 Program Editor bottom overflow file WordPerfect Library
PED
 Program Editor delete save WordPerfect Library
PEM
 Program Editor macro WordPerfect Library
PEQ
 Program Editor print queue file WordPerfect Library
PER
 Program Editor resident area WordPerfect Library
PES
 Program Editor work space file WordPerfect Library
PET
 Program Editor top overflow file WordPerfect Library
pet
 package[7] Puppy Linux
PEX
 Proboard EXecutable file (Executed from PB) Proboard
PFA
 PostScript Font File
PFA
 Type 3 font file (unhinted PostScript font)
PFB
 Adobe Acrobat document Adobe Acrobat Reader
PFB
 PostScript font Adobe Type Manager (ATM)
PFC
 Personal File Cabinet AOL
PFC
 Text file First Choice
PFK
 Programmable function keys XTreePro
PFM
 Windows Type 1 font metric file
PFS
 Database (PFS:FILE) - text file (PFS:Write) PFS
PFT
 Printer font ChiWriter
PG
 Page cut/paste file IBM LinkWay
PGD
 PGP cripted disk
PGI
 Printer Graphics File device driver PGRAPH library
PGL
 HP Plotter vector graphics format
PGM
 Graphics format (Portable GrayMap) JASC Media C.
PGM
 Program Signature
PGP
 Support file Pretty Good Privacy RSA System
PGS
 Manual page man4dos
PH
 Optimized .goh file Geoworks
PH
 Perl header file
PH
 Phrase-table Microsoft C/C++
PHD
 PolyHedra Database
PHM
 Phone book DN - Lync
PHN
 Phone list UltraFax - QmodemPro
PHO
 Phone database Metz Phone for Windows
PHP
 PHP file
PHP3
 PHP 3 file
PHP4
 PHP 4 file
PHR
 Phrases LocoScript
PI2
 Portrait Innovations High Resolution Encrypted Image file Portrait Innovations Studio2 (proprietary)
PIC
 123 Vector graphics format CShow - Alchemy - Paint (Pictor) 画像
PIC
 Bitmap graphics file Macintosh b&w PICT1 - color PICT2 画像
PIC
 Lotus picture 画像
PIC
 PIXAR picture file SDSC Image Tool 画像
PICT
 Macintosh Picture 画像
PIE
 GlovePIE script file GlovePIE
PIF
 OS/2 graphics metafile PICVIEW.EXE
PIF
 Program Information File Windows 3.x
PIF
 Vector graphics GDF format file (IBM mainframe computers)
PiM
 Pascal Text Mode Image File The Ultimate Draw
PIT
 Compressed Mac file archive created by PACKIT unpackit.zoo
PIV
 Pivot Stick Animator file Pivot Stick Animator
PIX
 Alias image file SDSC Image Tool
PIX
 Inset Pix
PJ
 Project CA-SuperProject
PJT
 Additional (FPT) project description file FoxPro
PJX
 Main (DBF) project description file FoxPro
PK
 PacKed bitmap font bitmap file (TeX DVI drivers)
PK
 Peak file Cool Edit
Quake 2 data file id Software
Quake 3 data file id Software
Doom 3 and Quake 4 data file id Software
PKA
 Archive PKARC
Installer script Next, macOS, Sony PS3
PKG
 P-CAD database P-CAD
PKT
 Fido message packet FTN software
PL
 Palette Harvard Graphics
PL
 Perl source code file
PL
 Prolog source code file
PL
 Property List font metric file TeX
PL1
 Room plan 3D Home Architect
PL2
 Palette Diablo II
PL3
 Chart palette Harvard Graphics 3.0
PLA
 Playlist
PLB
 FoxPro library FoxPro
PLB
 P-CAD library P-CAD
PLC
 Add-in file (functions - macros - applications) Lotus 1-2-3
PLC
 P-CAD database P-CAD
PLD
 PhotoLine Document PhotoLine image processing
PLE
 Encrypted Chat Log Messenger Plus! Live Plugin - Log viewer
PLIST
 Mac OS Property List Apple's Property List Editor
PLL
 Prelinked library CA Clipper
PLM
 DisorderTracker2 music module AWAVE
PLN
 Spreadsheet WordPerfect for Win
PLP
 Playlist
PLP
 Messenger Plus! Sound Pack Messenger Plus! Live Plugin
PLS
 Playlist file WarpVision (OS/2)
PLSC
 Messenger Plus! Script Pack Messenger Plus! Live Plugin
PLSK
 Messenger Plus! Skin Pack Messenger Plus! Live Plugin
PLT
 HPGL plotter file vector graphics AutoCAD
PLT
 Output file for ploter
PLT
 P CAD: Output file editor for PCPLOT or PCPRINT P CAD
PLT
 Page Magic 2.0 paper format Page Magic 2.0
PLT
 Palette
PLT
 Table for .pll CA Clipper
PLY
 Data PopMail
PLY
 Presentation screen Harvard Spotlight
PLY2
 Data PLY2 object
PLY
 ZipPack
PM
 Auran Jet progressive mesh file (obsoleted by IM and LM) Trainz
PM
 Perl module
PM
 Bitmap graphics Presentation Manager
PM3
 PageMaker 3.0 data file PageMaker 3.0
PM4
 Document PageMaker 4
PM5
 Aldus PageMaker 5.0 publication Aldus PageMaker
PMC
 Graphics A4TECH Scanner
PMI
 OS/2 V3 SVGA PMI-File Svga.exe
PMI
 PhatPad note PathWare
PMM
 Program file Amaris BTX/2
PMP
 PhotoMorph Project PhotoMorph
PN3
 Printer device driver Harvard Graphics 3.0
Portable Network Graphics, Animated Portable Network Graphics 多数 画像/動画
PNF
 Pre-compiled Setup Information file Microsoft Windows
PNM
 PBM Portable aNy Map graphics file
PNT
 Macintosh painting
PNT
 Pointlist segment FTN software
PNT
 QWK reader pointer file MarkMail 2.x
POH
 Optimized .goh file Geoworks
POL
 InnovMetric Software Polygon Models Format
POLICY
 Group Policy File Microsoft Windows
POLY
 Data Patrick Flynn's Poly Format - 3D object
POP
 Messages index PopMail
POP
 Pop-up menu object dBASE Application Generator
POT
 Microsoft PowerPoint template
POV
 Raytraced graphics image Persistence Of Vision
POW
 Power Chords instrument/song file Power Chords
PP
 Amiga archive POWERPACKER
PPA
 Microsoft PowerPoint Add-in
PPB
 Button bar for Print Preview WordPerfect for Win
PPD
 PostScript printer description file
PPJ
 Premiere Project Premiere
PPK
 Archive (using for many distributives) PPK
PPL
 PolaroidPalettePlus ColorKey device driver Harvard Graphics 3.0
PPM
 Graphics format (Portable PixelMap) JASC Media C.
PPO
 Preprocessor output CA Clipper 5.*
PPP
 Publication PagePlus
PPS
 Storyboard Personal Producer
PPS
 Microsoft PowerPoint Slideshow (stand alone slideshow)
PPT
 Microsoft PowerPoint Presentation Microsoft PowerPoint
PPTX
 Office Open XML Presentation
PR1
 Packrat 4.0 data file Packrat 4.0
PR2
 Packrat 4.x data file Packrat 4.x
PR2
 Presentation Aldus Persuasion 2.x
PR2
 Printer driver dBASE IV
PR3
 PostScript printer driver dBASE IV
PR3
 Presentation Aldus Persuasion 3.x
PRD
 Printer driver
PRE
 Presentation Freelance Graphics
PRE
 Settings Programmer's WorkBench, Microsoft C/C++
PRE
 Stork graphic file
PRF
 CheckIt Pro v1.0 data file CheckIt Pro 1.0
PRF
 Pixel Run Format graphics file Improces - Fastgraph
PRF
 Printer driver dBASE IV
PRF
 Profiler output
PRG
 Program source code (e.g. Clipper language) CA Clipper
PRG
 Program source dBASE IV - FoxPro - Clipper 5 - dBFast
PRG
 Program Atari
PRI
 Printer definitions LocoScript
PRJ
 Borland C++ IDE project file BC.EXE - BCW.EXE
PRK
 SimPark Saved File SimPark
PRM
 Parameters
PRN
 Printer driver Signature
PRN
 Text file Lotus 1-2-3 - Symphony
PRN
 Usually printer output file
PRO
 Profile used by many programs to store configuration data
PRO
 Graphics profile file DOS
PRO
 Proboard conf. file Proboard
PRO
 Prolog language source
PRO
 PROLOG source code file
PROJ
 Project File (Interface Builder) NeXT
PROPERTIES
 Java properties file Java applications
PROTO
 Message specification Google Protocol Buffers
PRR
 The Perfect Resume data file Perfect Resume
PRS
 Norton Viewer DLL file
PRS
 Presentation Harvard Graphics Win
PRS
 Printer Resource e.g. fonts WordPerfect for Win
PRS
 Procedure dBASE IV
PRT
 Pro/ENGINEER Part Pro/ENGINEER
PRT
 NX Part(旧Unigraphics) NX,Unigraphics
PRT
 P-CAD component P-CAD
PRT
 Part or Drawing Cadkey
PRT
 Printer driver Dr. Halo
PRX
 Compiled program FoxPro
PS
 Document in PostScript format adobe
PSA
 Archive (Pretty Simple Archive) PSA.OUT (GNU)
PSD
 Periscope Debbuger Def file Periscope
PSD
 Photoshop bitmap file Photoshop document
PSE
 see PSEG
PSEG
 Bitmap graphics IBM printer Page SEgment
PSF
 Outline PostScript printer font ChiWriter
PSM
 Music format (Protracker Studio Module) Protracker - MASI
PSM
 Symbol table of IDE Turbo Pascal
PSM
 3D Model 18 Wheels Of Steel
PSN
 Presentation file for Sound Script Windows
PSP
 image file with layers Paint Shop Pro (all versions)
PSQ
 Premiere Sequence Premiere
PST
 Postbox file BMail
PST
 Archive File Microsoft Outlook
PSV
 PlayStation 2/PlayStation 3 saved game PlayStation 2 and PlayStation 3
PSW
 File w/ passwords for any program/game many
PT
 Game crack Player Tools
PT
 Kodak Precition Color Management System
PT3
 Device driver Harvard Graphics 3.0
PT3
 Template PageMaker 3
PT4
 Template PageMaker 4
PT5
 Aldus PageMaker 5.0 publication template Aldus PageMaker
PTB
 Power Tab Software Power Tab Editor
PTB
 Script PubTech BatchWorks
PTF
 Playstation Portable Theme file PSP Theme settings menu
PTF
 ProTools Session File Digidesign ProTools
PTG
 Panasonic Title Graphics
PTL
 Premiere Title Premiere
PTM
 Macro PubTech BatchWorks
PTM
 Music format
PTM
 Page Magic 2.0 template Page Magic 2.0
PTN
 Pattern Cadkey
PTN
 Pattern CarveWright/CompuCarve Designer
PTR
 OS/2 cursor image file ICONEDIT.EXE
PTR
 QWK reader pointer file QMail
PTU
 Performer Terrain Utilities
PUB
 Package File Exstream Dialogue
PUB
 Page template Microsoft Publisher
PUB
 Public key ring file Pretty Good Privacy RSA System
PUB
 Publication Ventura Publisher - 1st Publisher
PUD
 Warcraft II Map file Warcraft II
PUT
 Archive PUT
PUT
 Graphics format WScan
PVD
 Script Instalit
PVL
 Library Instalit
PVM
 Texture Files PVMEdit
PVT
 Local Fidonet pointlist FTN software
PW
 Text file Professional Write
PWF
 Workflow Files macOS Server Podcast Producer
PWK
 Workspace File PolyWorks
PWL
 Password List
PWP
 Text document Professional WritePlus
PX
 Paradox 3.0 file Paradox 3.0
PXP
 3DS Process file 3D Studio
PXR
 Pixiar Picio AltamiraComposer
PXZ
 Compressed file to exchange media elements PSALMO
PY
 Python script file Python interpreter
PYC
 Compiled Python module Python interpreter
PYI
 Cognos Powerplay Model
PYO
 Optimized compiled Python module Python interpreter
PZD
 Default settings Pizazz Plus
PZI
 Graphics format PZP
PZO
 Overlay file Pizazz Plus
PZP
 Palette Pizazz Plus
PZS
 Settings Pizazz Plus
PZT
 Transfer file Pizazz Plus
PZX
 Swap file Pizazz Plus
Q0
 Q0 graphic file
Q3S
 Data Quick3D Scene
QAG
 Quick Access Group Norton Desktop
QAP
 Application Omnis Quartz
QB
 Tony Hawk's Pro Skater series scripting files
QBB
 Quickbooks Backup File
Saved query (Query By Example, 例示による問い合わせ) dBASE IV - Quattro Pro
QBO
 Compiled query dBASE IV
QBW
 Spreadsheet QuickBooks for Windows
QCH
 Qt Compressed Help Trolltech Qt Assistant
QCP
 Mp3 extension on Motorola ringtones Motorola Phones
QDF
 Data file Quicken data file
QDK
 Backup of startup files created by Optimize QEMM
QDn
 Data file - segment n Omnis Quartz
QDV
 Graphics file Steve Blackstock Giffer
QDR
 Configuration file Q-Dir
QEF
 Query file Q+E for Microsoft Excel
Quicken-specific implementation of the OFX specification Intuit Quicken
QFX
 Fax QuickLink
QHC
 Qt Help Collection Trolltech Qt Assistant
QHCP
 Qt Help Collection Project Trolltech Qt Assistant
QHP
 Qt Help Project Trolltech Qt Assistant
Quicken Interchange Format Intuit Quicken
QIZ
 World book quiz World Book
QLB
 Quick library Microsoft C/C++
QLC
 ATM Type 1 fonts script Adobe Type Manager
QLP
 Printer driver QuickLink
QM4
 Options or services file QMail 4.x Mail Door
QPR
 Generated query program FoxPro
QPR
 Print queue device driver OS/2
QPX
 Compiled executable QBE query file FoxPro
QRS
 Equation Editor support file WordPerfect for Win
QRT
 Graphics format (QRT ray tracing)
QRY
 Query dBASE IV
QT
 QuickTime movie (animation)
QTVR
 QuickTime VR Movie
QVD
 QlikView Document (Data) QlikView Compressed Database File
QVW
 QlikView Document (View) QlikView Presentation File
QWK
 QWK reader message file
QXD
 Document QuarkXPress
QXL
 Element library QuarkXPress
R
 Ratfor file
R
 Script file R
R00, R01, ...
 Part of a multi-file RAR archive.
R2D
 Reflex 2 datafile Reflex 2
R3D
 Red Raw Video (raw video data created with a Red camera) Red Camera
R8
 Raw graphics file (one byte per pixel) plane one PicLab
R8P
 PCL 4 bitmap font file Intellifont
RA
 Remote Access conf. files RA
RA0, RA1, ...
 Part of a multi-file RAR archive.
RAD
 2-op FM music Reality AdLib Tracker
RAD
 Radiance
RAL
 Remote Access Language file Remote Access
RAM
 Ramfile RealAudio
Archive WinRAR
Graphics format SUN Raster
RAT
 Datafile (RATS)
RAW
 HSI raw graphic file
RAW
 PCM Signed Raw Sound File
RAW
 QRT graphic file
RAY
 Rayshade
RB
 Ruby Script file
RBF
 Datafile Rbase
RC
 Configuration file emacs
RC
 Resource Compiler script file Microsoft C/C++, Borland C++
RC
 Resource Script Resource Writer
RC
 UUPC configuration files UUPC
RC
 Windows resource compiler script RC.EXE -Resource WorkShop - OS/2
RCG
 Netscape newsgroup file (netsc.rcg)
RData
 Data file R
RDF
 Compiled UIC source code Geoworks UI Compiler
RDI
 Device-independent bitmap file (RIFF RDIB format)
RDP
 RDP connection Remote Desktop connection
RDX
 Datafile Reflex
REC
 Archivation protocol ARCSERVE
REC
 Datafile EpiInfo
REC
 Record file Sprint
REC
 Windows Recorder Macro File WindowsRecorder
RED
 Path info Clarion Modula-2
RED
 REDuced nodelist file T-Mail nodelist Compiler
REF
 Cross-reference
REG
 OLE Registration file Windows 3.x
REG
 Registration information or key
REL
 Foreground job relocatable file RT-11
REM
 Remarks definition Sourcer
REM
 Remarks
REP
 QWK reader reply file
REP
 Report file used by many applications
REP
 Report Report Designer - CodeReporter - DataBoss
REQ
 File request FTN Software
RES
 Compiled resource Microsoft C/C++, Borland C++
RES
 DBASE resources dBASE IV
RES
 Windows compiled resource package Windows
REV
 Revision file Geoworks
REX
 PharLab executable file (old format) PharLab
REX
 Report definition Oracle
REX
 Rexx language source file Rexx
REZ
 Resource file
RF
 Sun raster graphics file
RFT
 DCA/RFT Revisable Format Text file IBM DisplayWrite 4.0-5.1 文書
RGB
 SGI RGB image file (RAW) SDSC Image Tool
RGX
 Symbol tables etc. info ReaGeniX code generator
RH
 Resource header file Borland C++ 4.5
RH
 Windows resource file header RC.EXE
RHistory
 Command history logfile R
RI
 Data Lotus 1-2-3
RIB
 Graphics (Renderman Interface Bytestream) 3D Reality
RIC
 Fax Ricoh
RIF
 RIFF bitmap graphics (Resource Interchange File Format) Fractal Design Painter
RIP
 TeleGrafix Remote Imaging Protocol Maximus 3.0
RIX
 Graphics (ColoRIX Image File) ColoRIX
RL4
 Bitmap graphics 画像
RL8
 Bitmap graphics 画像
RLA
 Wavefront raster image file SDSC Image Tool
RLB
 Data hgw.rlb Harvard Graphics Win
RLC
 Graphics 1bit/pixel scanner output
RLD
 Norton Commander 5.0 temp file NC 5.0
RLD
 OSIMapDef. RecLoad Definition
RLE
 Utah Run Length Encoded rasterfile graphic file SDSC Image Tool
RLZ
 REALIZER source code file CA-Realizer
RM
 Real Media Real Player
RMB
 data RegistryMaster
RMI
 Windows alternate synthesized sound format RIFF RMID format
RMK
 Make file CA Clipper - RMAKE
Real Media Variable Bitrate Real player
RN
 XPL program for Nota Bene users
RND
 Rendering Slide AutoCAD AutoShade
Rnn
 Multi volume RAR archive RAR
RNO
 Runoff file VAX
ROL
 FM music Adlib Music File Roland 音声
ROM
 Read Only Memory image in emulators, AONs, etc.
ROO
 CODASYL DBMS Database Root Oracle
RPB
 Data report file used by CP Backup CP Backup
RPD
 Database RapidFile
RPF
 AutoCAD pattern ACAD
RPL
 Text document Replica
RPM
 Red Hat Package Manager Red Hat Linux
RPT
 Report file used by many applications
RRD
 Reduced Resolution Dataset ESRI (GIS)
RS
 Data file Amiga Resource - Reassembler
RS_
 Resource fork of a Macintosh file Mac-ette
RSC
 Resource file ViewMax - many
RSL
 Application - Project resolver one
RSL
 Resource Library used by PC Tools for Windows PC Tools - Win
RSP
 Response file 多数
RSP
 Response File OS/2
RSY
 FLEXIT Multishot Survey Raw Data file FLEXIT
RTF
 Rich Text Format ワードパッドなど多数 文書
RTFD
 RTF-Packet NeXT
RTL
 HP RTL graphic file
RTL
 Run-Time library Norton Utilities
RTL
 Text file
RTP
 RTPatch software update package data file Pocket soft patch
RTS
 Realizer executable file
RTS
 Runtime library file CA-Realizer
RUL
 Echo-conference rules
RUN
 PC Tools for Windows batch file PC Tools
pseudo-executable file RUNZ Framework
RUS
 Russian text
RV
 Mobile pricelist data file Mobile
RVF
 TRichView
RVW
 Review
RWS
 Borland Resource Workshop symbol file Resource Workshop
RWS
 Resource Workshop data file Borland C++
RWX
 Criterion RenderWare
RWX
 MEME Shape File
RWX
 Script RenderWare
RWZ
 Microsoft Outlook Rules Wizard File Microsoft Outlook
RXD
 Reflex 1 datafile Reflex 1
RZK
 File Crypt password file All text editors
RZX
 File Crypt encrypted file File Crypt (Akte Krypta, Kriptirnik)
S$$
 Temporary sort file Sprint
S
 ASSEMBLY source code file unix
S
 Multi Edit macro file source Multi Edit
S
 MSTS Shape file MSTS
S19
 Motorola ASCII format of executables
S1K
 S1000 Simnet Format
S3I
 Digiplayer/ST3 Sample File Digiplayer - ST3
S3M
 Music (16 channels) Scream Tracker 3.0 - DMP
S7I
 Seed7 library / include file Seed7 interpreter and compiler
SA?
 Packed mail FTN software
SAB
 Saber file Star Wars: Jedi Knight Jedi Academy
SAF
 see SAIF
SAFE
 SafeIT Encrypted
SAIF
 Spatial Archive Interchange Format
SAL
 Datafile SORITEC
SAN
 LucasArts' SMUSH/INSANE animation
SAM
 Lotus Ami Pro data file Lotus Ami Pro 文書
SAM
 Text file Samna - Lotus Ami/Ami Pro
SAR
 Archive SAR
SAT
 ACIS
SATS
 Static source ATS
SAV
 Backup file (saved file)
SAV
 Configuration
SAV
 Executable RT-11
SAV
 SPSS "System File" PSPP
SAV
 Saved game state Spider Solitaire (Windows)
SAVER
 Screensaver macOS
SB
 Audio file (signed byte) 音声
SB
 Raw Signed Byte (8bit) data AWAVE
SB
 Raw Signed PCM Byte 8bit data AWAVE
SB
 Scratch project Scratch
SB2
 Scratch 2.0 project Scratch
SBD
 Storyboard Storyboard Editor
SBI
 Sound Blaster Instrument file (Creative Labs)
SBK
 Emu SoundFont Bank (AWE32 Bank) Convert (c) Villena
SBL
 Stony Brook Pascal library SB Pascal
SBP
 DML program Superbase 4
SBR
 Support file Source Browser
SBT
 Notes related to record Suberbase 4 Windows
SC
 Display driver Framework II
SC
 PAL script Paradox
SC
 Script Borland Paradox
SC2
 Saved City SimCity 2000
SC3
 Renamed dBASE III screen mask file dBASE IV
SC3
 Screen device driver Harvard Graphics 3.0
SC4
 Saved City SimCity 4
SC4
 Game Scenario RollerCoaster Tycoon Deluxe/Expansion Pack
SCA
 Datafile SCA
SCC
 Text file
SCD
 SCODOL film recorder (Scan Conversion Object Description Language) SCODOL
SCF
 Standard Chromatogram Format Staden package
SCF
 ? SimAnt or SimTown ??
SCF
 Windows Explorer Command Windows Explorer
SCF
 Multimedia show ScoreMaker
SCF
 Spelling checker configuration file Symphony
SCH
 Project schedule Schedule Publisher
SCH
 Circuit Design Schematic P-CAD - Orcad - Protel
SchDoc
 Circuit Design Schematic Protel - Altium Designer
SCI
 Fax SciFax
SCI
 System Configuration Information
SCM
 Scheme source code file
SCM
 Schematic file (Circuit Diagram for PCB design) Zuken CadStar
SCM
 StarCraft mission
SCN
 SCeNe RTrace
SCN
 Screen file Kermit
SCO
 High score
SCP
 Script BITCOM
SCR
 Any other screen system
SCR
 DEBUG source code file DOS Debug
SCR
 Forth screen (source) file Forth
SCR
 Screen - screen snapshot dBASE IV - Procomm Plus
SCR
 Screen font LocoScript
SCR
 Screen saver Windows 3.x
SCR
 Screen snapshop
SCR
 Script file source TeleMate - Kermit - 1st Reader
SCT
 Additional (FPT) screen description file FoxPro
SCTOR
 Raster graphics format 一部のオペレーティングシステム
SCX
 Chart Stanford Chart
SCX
 Graphics format ColoRIX
SCX
 Main (DBF) screen description file FoxPro
SCX
 Starcraft: Brood War scenario
SCY
 Security file ReaGeniX
SD
 Sound Designer I audio file AWAVE
SD7
 Seed7 source file Seed7 interpreter and compiler
SDA
 Fidonet's Software Distribution Network file archive description
SDC
 Video DigimaxMaster - Samsung NV3
SDC
 Synopsys Design Constraints Electronic Design Automation Tools
SDF
 Microsoft SQL Server Compact Edition database file
SDF
 Flight data microdrones GmbH
SDF
 Source definition file Sourcer
SDF
 System Data Format file (fixed length ASCII text)
SDI
 Software Distribution Network Info file
SDK
 Roland S-550/S-50/W-30 Disk Image
SDL
 Alias Wavefront Scene Description Language
SDM
 Signed Differential Mapping brain maps and/or distributions Signed Differential Mapping
SDML
 Spacial Data Modeling Language
SDN
 Software Distribution Network compressd file archive pak251.exe
SDR
 SmartDraw File SmartDraw Pro
SDS
 MIDI Sample DUMP Standard File
SDTS
 Spatial Data Transfer Standard
SDW
 Ami Draw Symbol File
SDW
 StarOffice/StarSuite ドキュメントファイル OpenOffice.org Writer インストール/変更でのオプションのコンポーネント 旧バージョンのフィルターを追加でサポート 文章
SDX
 Sample DUMP Exchange File
SEA
 Self-Extracting compressed Macintosh file Archive
SEC
 compressed file
SEC
 Diskreet encrypted file Diskreet
SEC
 Secret key ring file Pretty Good Privacy RSA System
SEC
 Secured animation file Disney Animation Studio
SEN
 Scifer Archive Format ( Internal Header Mode]
SEP
 Printer separator page
SEQ
 ABI Text Sequence Applied Biosystems
SEQ
 Atari animation file
SEQ
 Video Tiertex video sequence
SEQ
 Sequential Instruction File Bubble Chamber
SES
 Session info Clarion Modula-2
SES
 Multitrack Audio Session info Adobe Audition
SET
 Configuration file 1st Reader
SET
 Driver sets created by Install Symphony
SET
 Extension used by Norton Backup and CPS Backup for setup info Norton Backup - CPS Backup
SET
 Hump Assignments File FYM
SET
 Setup options file
SET
 YVD card set file YVD
SF
 IRCAM Sound File CSound package - MixView sound sample editor
SF
 JAR Digital Signature
SF
 WPS attribute storage (OS/2 WorkPlace Shell) wp_root.sf OS/2 WorkPlace Shell
SF2
 Emu SoundFont Bank v2.0 file AWAVE
SFB
 HP Soft font (obsolete under Windows)
SFD
 SoundStage Data file AWAVE
SFF
 Scene File Format
SFI
 Graphics SIS Framegrabber
SFI
 Printer font (HP LaserJet landscape) Ventura Publisher
SFL
 PCL 4 bitmap font (landscape) landscape - Intellifont -Ventura Publisher
SFN
 Font SPX
SFO
 Bitstream font file - fontware format
SFP
 PCL 4 bitmap font portrait - Intellifont - Ventura Publisher
SFR
 Sonic Foundry Sample Resource AWAVE
SFS
 PCL 5 scalable font file Intellifont
SFT
 Screen font ChiWriter
SFX
 SFX (self-extracting archives) script RAR
SG1
 Graphics Stanford Graphics
SGF
 Document with graphics Starwriter
SGI
 Graphics file IRIS - Silicon Graphics
SGP
 Statistics STATGRAPHICS Plus
SGT
 Save/get keyboard macro Signature
SH
 ASCII archive SHAR
SH
 Unix shell script
SH3
 Presentation Harvard Graphics 3.0
SHAR
 Archive UNSHAR (Unix)
SHB
 Background CorelShow
SHG
 Segmented Hyper Graphics Microsoft's shed.exe, JGsoft's Hotspot Builder, EC Software's Help and Manual
SHK
 Apple II archive SHRINKIT
SHM
 Shell macro WordPerfect Library
SHP
 Shape file and source file for text fonts

ESRI shapefile

AutoCAD

ArcGIS

SHR
 see SHAR
SHT
 HTML format for WWW NetScape
SHW
 Presentation Harvard Graphics 2.0 - CorelShow
SHW
 Slide show WordPerfect Presentations
SHX
 Shape entities

ESRI shapefile

AutoCAD

ArcGIS

SIB
 Sibelius file Sibelius 1-5
SIF
 Setup Installation Files info Windows NT Setup
SIG
 Current program settings Signature
SIG
 Signature file ThunderByte AntiVirus - PopMail
SIK
 Backup file (Sicherungskopie) Microsoft Word
SIM
 Simon document file - Simon instruction software editor
SIS
 symbian file
SIT
 Archive (Macintosh) STUFFIT
SKP
 Google SketchUp file
SKY
 SYLK表計算ファイル Microsoft Multiplan、他 表計算
SL
 S-Lang source code file
SLB
 P-CAD library (symbols) P-CAD
SLB
 Slide library AutoCAD
SLC
 SALT (script from Telix) compiled code Telix
SLD
 Slide AutoCAD
SLDPRT
 Part SolidWorks
SLDASM
 Assembly SolidWorks
SLDDRW
 Drawing SolidWorks
SLI
 Slide MAGICorp Slide Service
SLK
 Microsoft Excel import format Microsoft Excel
SLK
 SYLK Symbolic Link format data file Microsoft MultiPlan 表計算
SLL
 Sound data file
SLN
 Visual Studio solution data file Microsoft Visual Studio ソリューションファイル
SLP
 SLP command file created by SRCCOM RT-11
SLP
 Localization project file Sisulizer
SLT
 SALT Script Application Language for Telix script source Telix
SLV
 Solution for any game many
SM
 Maillist SoftSpoken Mailer
SM
 Script ScriptMaker
SM
 SMALLTALK source code file
SM
 Text file Samna Word
SM
 StepMania Step File StepMania
SMC
 Super Nintendo ROM
SMF
 Fax SMARTFAX
SMK
 Smacker Video Format (RAD Video)
SML
 System Macro Library RT-11
SMM
 Ami Pro Macro File Ami Pro
SMN
 Font (ParaGraph's WorkScript format)
SMP
 Sample (sound file)
SMP
 Samplevision File Samplevision
SMPL
 Data Megahedron 3D object
SMS
 MSTS Sound managemant system file MSTS
SMT
 Text file Smart Ware II
SN
 Compressed song file Sound Club editor
SND
 Digitized sound file Macintosh/ATARI/PC
SND
 Power Chords drum sound file Power Chord
SNDB
 SQLNotes database SQLNotes
SNG
 Song (midi sound) Midisoft Studio - Prism
SNO
 SNOBOL4 source code file
SNP
 Book-shelf for .BOO READIBM
SNP
 Microsoft Access report snapshot
SNP
 Output video format from Computer Eyes equipment
SO
 shared object, dynamically linked library Unix
SOAR
 Soar Production file
SOL
 Solution e.g. game walkthroughs
SOL
 Adobe Flash shared object ("Flash cookie") Adobe Flash
SOM
 Network serial numbers Quattro Pro
SOM
 Sort information Paradox
SON
 Song SBStudio II
SOU
 Temporary BATCH file RT-11
SOU
 SBStudio II Sound File SBStudio II
SOU
 Sound data (sound tool)
SP
 Archive (unix) SPLINT
SPC
 Program Microsoft Multiplan
SPC
 Temporary file WordPerfect for Win
SPC
 SNES SPC-700 Sound File Super Jukebox
Spectroscopic data (scientific) Thermo Scientific
SPD
 Scalable font Speedo - Harvard Graphics 3.0
SPF
 Slide presentation file EnerGraphics
SPF
 data SQR Portable Format
SPG
 Glossary Sprint
SPI
 Graphics (Siemens and Philips scanner)
SPIFF
 Still Picture Interchange File Format
Spin source file Parallax Propeller Microcontrollers
SPL
 Archive SPLINT
SPL
 Customized printer driver Sprint
SPL
 Divided file segment Slice
SPL
 Personal spell dictionary Signature
SPL
 Print spooling file Windows 3.x
SPL
 Sample
SPM
 Data wp{wp}.spm WordPerfect
SPP
 Printer file Sprint
SPR
 Document letter Sprint
SPR
 Generated executable screen file FoxPro
SPR
 Sprite
SPR
 Story Board sprites
SPS
 Exported SyncBack profile SyncBack
SPS
 Screen driver Sprint
SPS
 SPSSx source code file VAX/VMS
SPT
 Data support file MITAC disk/system management utility pack
SPT
 SPITBOL source code file
SPW
 Worksheet SigmaPlot
SPX
 Compiled executable screen file FoxPro
SPX
 Ogg Speex bitstream[8] Xiph.Org Foundation
SQD
 Squish message base Squish
SQI
 Squish message base index Squish
SQL
 SQL language code Any SQL database
SQL
 Squish message base lastread pointers Squish
SQM
 Windows Live Messenger log file
SQN
 Note file SquareNote
SQZ
 Archive SQUEEZE
SQZ
 FOXPRO Squeeze file FOXPRO
SRC
 Source code Aurora Compiler
SRC
 Multi-edit source Multi-Edit
SRC
 Source DataFlex
SRF
 Sun Raster File graphics file
SRP
 Script QuickLink
SRT
 Subtitle format SubRip
SS
 Bitmap graphics Splash
SS
 Screen saver DN
SSC
 Celestia Solar System Catalog file Celestia
SSD
 Datafile SAS/PC
SSF
 Graphic file SnagIt Studio File/PC
SSG
 Saved game Simsig
SSP
 Datafile SAS Transport
SSR
 FLEXIT Singleshot Survey Raw Data file FLEXIT
SST
 AVHRR graphic file
SSV
 Spreadsheet viewer file
ST
 Instrument library Scream Tracker
ST
 SMALLTALK source code file Little Smalltalk
ST
 Stamp NeoPaint
STA
 Data file Statistica
STA
 Saved state Reflection 4.0
STA
 Stack Spinmaker Plus
STB
 Symbol table file RT-11
STB
 Stub library Genus GX Kernel
STC
 Celestia Star Catalog file Celestia
STC
 OpenOffice.org 1.*spreadsheet template OpenOffice.org Calc
STD
 State Transition Diagram graphic file Prosa
STD
 OpenOffice.org 1.*drawing template OpenOffice.org Draw
STF
 Archive SHRINKTOFIT
STF
 Setup Table File
STI
 OpenOffice.org 1.*presentation template OpenOffice.org Impress
STK
 eBook Starebook
STL
 Stereolithography Interface Format
STM
 Music format (4 channels) (Scream Tracker Module) ST - DMP
STM
 State Transition Diagram model file Prosa
STO
 Pascal stub OBJ file Genus GX Kernel
STP
 Subtitler Project Belle Nuit Subtitler
STR
 Gate3 table structure file
STR
 Structure list object file dBASE Application Generator
STR
 Playstation video file
STS
 Music format (Scream Tracker Song) ST 2.0-2.3
STS
 Project status info Microsoft C/C++
STU
 Studio Project Pinnacle Studio (video editing software)
STW
 Data file SmartTerm for Windows
STW
 OpenOffice.org 1.*text document template OpenOffice.org Writer
STX
 Electronic book SmarText
STX
 Music format
STX
 Tax form CA-Simply Tax
STY
 Ami Pro Template (Style); used by other programs for `styles` Ami Pro
STY
 Style library or sheet many
SU?
 Packed mail FTN software
SUB
 Subtitle format SubViewer; Author David Dolinski
SUF
 Sony camera configuration file (setup.suf) XDCAM-EX camcorders
SUI
 SUIT library Simple User Interface Toolkit
SUM
 Summary
SUN
 Sun rasterfile graphics file
SUO
 Solution User Options for Microsoft Visual Studio
SUP
 Supplementary dictionary WordPerfect for Win
SVD
 Autosave file for document Microsoft Word
SVG
 Autosave file for glossary Microsoft Word
SVG
 Scalable Vector Graphics, many
SVQ
 MRC-Pro sequencers music format Roland Corporation synths such as XP or Fantom series
SVS
 Autosave file for style sheet Microsoft Word
SVW
 Super Video Windows Conversion Artist
SVX
 Interchange, 8SVX/16SV AWAVE
SVY
 FLEXIT Survey data FLEXIT
SW
 Raw Signed Word (16bit) data AWAVE
SWF
 Shockwave Flash Macromedia
SWG
 SWAG Pascal Snippets file SWAG
SWP
 Document backup Sprint
SWP
 Swap file
SWT
 Hump Routes File FYM
SXC
 OpenOffice.org 1.*spreadsheet OpenOffice.org Calc
SXD
 OpenOffice.org 1.*drawing OpenOffice.org Draw
SXG
 OpenOffice.org 1.*master document
SXI
 OpenOffice.org 1.*presentation OpenOffice.org Impress
SXM
 OpenOffice.org 1.*formula OpenOffice.org Calc
SXP
 3DS Process file 3D Studio
SXW
 OpenOffice.org 1.*text document OpenOffice.org Writer
SY1
 SmartPix symbol library Ami Pro
SY3
 Harvard Graphics format
SY3
 Symbol file Harvard Graphics 3.0
SYD
 Backup of startup files created by QEMM (?) autoexec.syd
SYD
 Sysedit backup file Sysedit
SYG
 Monitor and handler files created by SYSGEN RT-11
SYM
 Compiler symbolic information file
SYM
 P-CAD component (symbols) P-CAD
SYM
 Precompiled headers Borland C++
SYM
 Program symbol table Power C, Microsoft ILink incremental linker
SYM
 Symbol file Harvard Graphics 2.0, Microsoft Windows SDK
SYN
 SDSC Synu image file SDSC Image Tool
SYN
 Synonym file Microsoft Word 5
SYS
 Datafile SYGRAPH - SYSTAT - SPSS/PC
SYS
 System file - device driver or hardware configuration info DOS
SYW
 Graphics file (symbol) Harvard Graphics Win
SYW
 Yamaha SY-85/SY-99 Wave File Convert (c) Villena
T
 Archive without compression (tape) tar
T
 TADS source
T
 Tester symbol table ReaGeniX code generator
T?H
 Turbo Help file (Pascal, C, Assembler, ...) Borland Thelp
T$M
 ??? - Found in Windows (Vista) temp folder c:\windows\temp
T2B
 Bookeen Cybook thumbnail Cybook
T2L
 True2Life file format 3D Internet content developers
T44
 Temporary file for Sort or Index dBASE IV
T64
 Program C64S emulator
TAG
 Query tag name DataFlex
TAH
 Help file for Turbo Assembler Borland C++
TAL
 Adobe Type Align Adobe
TAL
 Text illustration TypeAlign
TAP
 Tape file ZX Spectrum emulator by g.a.lunter
アーカイブ TAR アーカイブ
TAZ
 アーカイブ WindowsZipNT - TAR - COMPRESS アーカイブ
TB
 Tab file (Virtual Desktop Tab) Tabbery
TB1
 Font file Borland Turbo C
TB2
 Font file Borland Turbo C
TBF
 Fax Imavox TurboFax
TBK
 FOXPRO template backup file FOXPRO
TBK
 Memo backup dBASE IV - FoxPro
TBK
 Toolbook Asymetrix ToolBook
TBL
 Short for Table used by many programs
TBL
 Aldus TableEditor file TableEditor
TBL
 Gate3 table file
TBL
 Graphics file (native format) PageMaker TableEditor
TBL
 Table of values OS/2
TBR
 Norton Desktop custom toolbar NDW
TBS
 Text elements ?? (Textbausteine) Microsoft Word
TBX
 Table Project Scheduler 4
TBZ
 アーカイブ WindowsZipNT - TAR - Bzip2 アーカイブ
TC
 Configuration Turbo C - Borland C++
TCH
 Help file Turbo C - Borland C++
TCL
 Tool Command Language source code Swat
TCT
 Drawing Template TurboCAD for Windows
TCW
 Native Drawing File TurboCAD for Windows
TD
 Config from Turbo Debugger Turbo Debugger
TD0
 Compressed diskette in a file Teledisk
TD2
 Configuration file Turbo Debugger for Win32
TDB
 Database TACT
TDDD
 Imagine Object File Format
TDF
 Speedo font file
TDF
 Typeface definition file Speedo
TDH
 Help file for Turbo Debugger Borland C++
TDK
 Keystroke recording file Turbo Debugger
TDR
 Contens of Arvid tape
TDS
 Symbol table Turbo Debugger
TDT
 Thumbnail data AVCHD
TDW
 Configuration file Turbo Debugger for Windows
TEC
 Data TECPLOT output
TEC
 TECO macro file ("compiled" form) TECO
TEF
 Fax Relisys TEFAX
TEL
 Host file Telnet
TEM
 Input template IconAuthor
TEM
 Turbo Editor Macro Language script Borland C++
TERM
 Terminal File
TES
 TECO macro file (source form) TECO
TET
 Tetris results DN
TEX
 Datasheet Idealist
TEX
 TeXテキストファイル Scientific Word - TeX 文書
TEX
 Image Slimtex
TEXT
 テキストファイル 文書
TF
 Configuration Turbo Profiler
TFA
 Area file Turbo Profiler
TFC
 Catalogue file Tobi's Floppy Cataloguer
TFF
 self executing TansForm dialogue TansForm
TFH
 Help file for Turbo Profiler Borland C++
TFM
 Tagged font metric file Intellifont
TFM
 TeX Font Metric file TeX
TFS
 Statistical information Turbo Profiler
TG1
 Project file On Target
TGA
 Targa True Color bitmapped format Paint.NET
TGZ
 アーカイブ WindowsZipNT - TAR - GNUzip アーカイブ
TH?
 Packed mail FTN software
THE
 Windows'95 デスクトップテーマ Microsoft Plus
THM
 Thumbnail or Theme File Picture Publisher, PhotoMagic, Canon Digital Cameras, Sony Digital Camerasなど多数
THS
 Thesaurus dictionary WordPerfect for Win
Acronis True Image Backup Acronis True Image
TIC
 FTN special file with assotiated file description ALLFIX
TIF
 TIFFを参照 画像
TIFF (tagged image format file) bitmapped file Alchemy - PhotoStyler -PageMaker - CorelDRAW 画像
TIL
 Fuzzy logic knowledge base Togai InfraLogic Fuzzy-C Compiler
TIS
 Tile set MahJongg 3.0
TJL
 Backup file VAXTPU editor
TLB
 Interoperability Type Library Windows 95
TLB
 Reference table Bubble Chamber
TLB
 Text library VAX
TLB
 Type library Visual C++
TLC
 Compiled Tool Command Language source code Swat
TLD
 Disk Image Teledisk
TLH
 Typelib Generated C/C++ Header Visual C++
TLP
 Project TimeLine
TM2
 Typical Meteorological Year data (new) Typical Meteorological Year
TMF
 Tagged Font Metric file WordPerfect for Win
TMF
 TiVo movie TiVo 動画
TMO
 ZTG global optimizer default output file Zortech C++
TMO
 HandsHigh ThoughtManager Outline ThoughtManager Desktop
TMP
 Temporary file ALL PROGRAMS
TMS
 TeleMate compiled script TeleMate
TMY
 Typical Meteorological Year data (old) Typical Meteorological Year
TMY2
 Typical Meteorological Year data (new) Typical Meteorological Year
TOC
 Table Of Contents text file (ASCII)
TOK
 Borland C++ 4.x reserved word list BCW.EXE
TOPC
 TopicCrunch SEO Project file (ASCII)
TORRENT
 TORRENT File μTorrent
Character file The Only Sheet
TOS
 Self-extracting file archive (Atari ST) アーカイブ
TP
 Session-state file Turbo Profiler
TP
 Turbo Pascal cfg file Turbo Pascal
TP
 TinkerPlots Document TinkerPlots and Fathom Dynamic Data Software
TP3
 Template Harvard Graphics 3.0
TPB
 Downloadable PCL Soft font file backup HiJaak
TPC
 エクスポートファイル 3D Topicscape
TPF
 Downloadable PCL Soft font file HiJaak
TPF
 Print data in EMF format ThinPrint
TPH
 Help file Turbo Pascal
TPL
 Resident units library Turbo Pascal
TPL
 Template file GoldEd -ITrack
TPL
 Template Harvard Graphics 2.0
TPOLY
 Data TPOLY 3D object
TPP
 Protected Mode Units Borland Pascal 7.0
TPU
 Borland Pascal DOS Mode Library Borland Pascal
TPU
 Command file (VAXTPU editor) VAXTPU editor
TPW
 Borland Pascal Windows Library Borland Pascal
TPW
 Session-state file Turbo Profiler for Windows
TPZ
 アーカイブ TAR - GNUzip アーカイブ
TR
 Man page input suitable for troff -man cawf2.zip
TR
 Session-state settings Turbo Debugger for DOS
TR2
 Session-state settings Turbo Debugger for Win32
TRC
 Debug support file Power CTrace
TRE
 Directory tree file PC-Tools
TRD
 Datafile TrID file identifier filetypes definitions package
TRIA
 Data Greg Hood's ASCII Triangle
TRIB
 Data Greg Hood's Binary Triangle
TRIF
 Tiled Raster Interchange Format
TRK
 Track (i.e. video sequence), used by many games
TRM
 Terminal settings Windows 3.x
TRN
 Translation support file Quattro - Clarion
TRS
 Executable file Micrografx or password file
TRS
 WiSo Mein Geld 2007
TRS
 IBM Mainframe log file TRSMAIN
TRU
 True Basic source file
TRW
 Session-state settings Turbo Debugger for Windows
TRY
 Typical Meteorological Year data (variant) TRNSYS
TS
 Qt Linguist TS File Trolltech Qt Linguist
TSE
 Data Light Map Maker ASCII Scene
TSK
 Microsoft Multimedia Task Application Windows 95
TSM
 Turbo Assembler Manual TASM for OS/2
TST
 Printer test file WordPerfect for Win
TSV
 Tab Separated Values
TTF
 TrueType Font file
TU?
 Packed mail FTN software
TUD
 The Ultimate Draw file The Ultimate Draw
TUT
 Tutorial
TV
 Table view settings Paradox
TVF
 Table view settings dBASE
TVn
 Overflow file above insert point in Doc n WordPerfect for Win
TXF
 Tax eXchange Format
TXI
 Support file TeX
ASCIIテキストファイルの一般的な名称 メモ帳、テキストエディタなど多数 文書
TXT
 Tab-Delimited Text File Microsoft Excel
TXW
 Yamaha TX-16W Wave File Convert (c) Villena
TY
 TiVo movie TiVo 動画
TYM
 Time Stamp (PageMaker 4) PageMaker 4
TZ
 アーカイブ TAR - COMPRESS アーカイブ
TZB
 アーカイブ TAR - COMPRESS - BTOA アーカイブ
TZL
 Tanzzle pattern file Tanzzle
TZX
 Tanzzle image file Tanzzle
U3D
 Model file format Ultimate 3D
U3D
 Universal 3D Adobe Acrobat
U8
 Sample
UB
 Raw Unsigned Byte (8bit) data AWAVE
UC2
 アーカイブ UC II アーカイブ
UCN
 New archive UC II
UCS
 Unknownsoft Service Pack (mainly for Shadow OS 2009) Unknownsoft Computer Systems
UDF
 Filter Photostyler
UDO
 Data Moray User Defined Object
UDW
 Raw Unsigned DWord data AWAVE
UE2
 Encrypted archive UC II
UFI
 data UFO CaptureV2 settings
UHA
 UHarc archive UHarc アーカイブ
UHS
 Universal Hint System (binary file)
UI
 Espire source code file Geoworks UI Compiler
UI
 Qt Designer's UI File Trolltech Qt Designer
UI
 User interface Sprint
UIF
 Long prompts for windows WordPerfect for Win
UIH
 Espire header file Geoworks UI Compiler
UL
 ULAW audio file
ULD
 Information about uploaded files Procomm Plus
ULF
 data MRF Mapping Tool Kit Universal List Format
ULT
 Music UltraTracker
UMB
 Backup file MemMaker
UNF
 Universal NES Image Interchange File Format
UNI
 Datafile Forecast Pro
UNI
 Music format UNIMOD - MIKMOD
UNIF
 Universal NES Image Interchange File Format
UNX
 Text file containing UNIX specific info 文書
UOML
 UniqueObject Markup Language (UOML) is a XML-based markup language
UOP
 Uniform Office Format presentation
UOS
 Uniform Office Format spreadsheet 表計算
UOT
 Uniform Office Format text 文書
UPD
 Update data dBASE
UPO
 Compiled update data dBASE
URL
 Internetショートカット (URL) Windows Explorer
URT
 Utah Raster Toolkit
USE
 Log file
USP
 Printer font with USASCII extended character set PageMaker
USR
 User database file Procomm Plus - Turbo C++ tour
UT!
 datafile uTorrent
UTZ
 Mobile Phone Theme Sony Ericsson
UU
 Encoded file (ASCII) UUENCODE/UUDECODE
UUE
 Encoded file (ASCII) UUENCODE/UUDECODE
UW
 Raw Unsigned Word 16bit data AWAVE
UWF
 UltraTracker WaveSample UltraTracker
V
 Consistency check support file ReaGeniX code generator
V
 Main input file for an image Vivid 2.0
V
 Verilog HDL file Verilog HDL compiler
V
 Coq script file coq compiler
V1, V2, ...
 Split parts of a whole file JJSplit
V8
 Covox 8bit file AWAVE
V10
 Data Gouraud Shaded Vectors
V2D
 Voucher design file Voucher management included in JFire (e.g. when printing a voucher)
VAI
 multimedia PhotoDub document
VAL
 Validity checks and referential integrity Paradox for Windows
VAL
 Values list object file dBASE Application Generator
VALA
 Sourcecode Vala
VAN
 Animation VistaPro
VAP
 Value Added Process NetWare 2.xx
VAP
 Dialogic indexed adpcm voice file VBASE/40
VAR
 Variable file IconAuthor
VB
 Visual Basic .Net ソースファイル Visual Basic .NET
VBPROJ
 Visual Basic .Net Visual Studio プロジェクトファイル Visual Studio .NET 2003
VBR
 Visual Basic カスタムコントロール Visual Basic
VBS
 VBScriptスクリプトファイル VBScript
VBX
 Visual Basic 拡張ファイル Visual Basic
VBZ
 Visual Basic セットアップウィザード テンプレート Setup Wizard
VC6
 Graphite - 2D and 3D drafting Ashlar-Vellum
VC
 Include file with color definitions Vivid 2.0
VC
 Spreadsheet VisiCalc
VCA
 Visual Clip Art
VCD
 VideoCD
VCD
 VirtualDrive CD Image File
VCD
 Value Change Dump (Verilog) temporal database file
VCD
 VisualCADD Drawing File
VCR
 VCR drivers for Arvid
VCW
 Visual workbench information Microsoft Visual C++
VCX
 表計算 VisiCalc Advanced
VDA
 Bitmap graphics
VDO
 Story Board video image Story Board
VDR
 Drawing ComputerEasy Draw
VEG
 Vegas Project Sony Vegas
VEW
 GroupWise for Windows Windows
VEW
 View file Clipper 5 - Lotus Approach
VFA
 FontLab Database file FontLab
VFM
 Ventura Font Metrics file
VFM
 Voting Form Voter
VFN
 Voting Form for Customers Voter
VGA
 VGA display driver
VGA
 VGA display font
VGD
 VGA display driver Generic CADD
VGR
 Graphics file Ventura Publisher
VI
 LabVIEW Virtual Instrument LabVIEW
VI
 Graphics file Jovian Logic VI
VI
 Watcom editor script VI.EXE
VIC
 「VICAR」を参照。
VICAR
 Graphics (Video Image Communication and Retrieval)
VID
 Bitmap graphics (YUV12C M-Motion Frame Buffer)
VID
 Graphics format Word&Deed
VID
 MS-DOS Shell Monitor file MS-DOS 5
VID
 Screen device driver Word
VIF
 see VIFF
VIFF
 Khoros Visualization Image File Format SDSC Image Tool
VIK
 Graphics format (VIKING)
VIM
 Vim script file Vim text editor
VINF
 data ReMPEG log file - frames info
VIR
 Virus or infected file
VIS
 VIS graphics file
VLM
 Vellum, Vellum 2D, Vellum Draft, Vellum 3D, DrawingBoard Ashlar-Vellum
VLM
 Virtual Loadable Module Netware
VM
 Virtual Memory file Geoworks
VMC
 Virtual memory configuration DOS/4GW PM 32X DOS Extender
仮想ディスクファイル VMware
VMF
 Font characteristics Ventura Publisher
VMG
 Nokia message file format Text Message Editor (Nokia PC Suite)
VMS
 Text file containing VMS specific info 文書
VO
 Include file with object definition Vivid 2.0
Video Object DVD-R, DVD-RW
VOC
 Sound format (Creative Lab's Sound File) PlayVoc
VOF
 Object folder VZ Programmer
VOP
 Visual Orangator Project
VOP
 Visual OTTHYMO Project
VOX
 Dialogic adpcm file AWAVE, CoolEdit
VP
 3DS Video posting 3D Studio
VPF
 Vector Product Format
VPG
 Graphics file VPGraphics
VPH
 Virtual Pascal Help VP/OS2
VPI
 Virtual Pascal Unit VP/OS2
Vector Quantized Animation The Legend of Kyrandia
VRM
 Overlay file QuattroPro
VRM
 Visual rexx source WATCOM VREXX
VRML
 Virtual Reality Modeling Language NetScape
VRP
 Project WATCOM VX?Rexx
VRS
 Video Resource e.g. video device driver WordPerfect
VS
 Vellum Solids Ashlar-Vellum
VS
 Include file with surface definition Vivid 2.0
VSD
 Diagram Shapeware Visio
VSD
 Visio drawing Visio
VSM
 Visual Simulation Model VisSim
VSP
 Sprite SPX
VSS
 SmartShapes file Shapeware Visio
VSS
 Visio Template Visio
VST
 Truevision Vista graphics file
VST
 Visio Template Visio
VUE
 Animation 3D Studio
VUE
 View dBASE IV - FoxPro
VW
 Text file Volkswriter
VWR
 File viewer file PC Tools
VWX
 CAD File VectorWorks 2008
VXD
 Windows 3.x 仮想デバイスドライバ Windows 3.x
VZT
 Temporal database file GTKWave data file
W
 Word chart file APPLAUSE
W01
 Yamaha SY-series wave files AWAVE
W01
 Yamaha TX16W wave file AWAVE
W30
 Printer font AST TurboLaser - Ventura Publisher
W31
 Startup file Windows 3.1
W3A
 Warcraft III Abilities Export File Contained in a Warcraft III map
W3B
 Warcraft III Destructables Export File Contained in a Warcraft III map
W3D
 Warcraft III Doodads Export File Contained in a Warcraft III map
W3G
 Warcraft III Replay File File for Warcraft III
W3H
 Warcraft III Buffs Export File Contained in a Warcraft III map
W3M
 Warcraft III Map File for Warcraft III: Reign of Chaos
W3N
 Warcraft III Campaign File for Warcraft III: The Frozen Throne
W3O
 Warcraft III Object Data Export File Contained in a Warcraft III map
W3P
 Warcraft III Save Save File for Warcraft III
W3Q
 Warcraft III Upgrades Export File Contained in a Warcraft III map
W3T
 Warcraft III Item Export File Contained in a Warcraft III map
W3U
 Warcraft III Unit Export File Contained in a Warcraft III map
W3V
 Warcraft III Save Save File for Warcraft III
W3X
 Warcraft III Expansion Map File for Warcraft III: The Frozen Throne
W3Z
 Warcraft III Save Save File for Warcraft III
W40
 Something for Windows95 (例: config.w40) Windows 95
W44
 Temporary file for Sort or Index dBASE
W95
 Something for Windows95 Windows 95
WAD
 War Allocation Daemon Doom - Doom2
WAG
 Yard Contents File FYM
WAI
 Warcraft III AI Data File Warcraft III AI Data File
Java Web Archive A Java file format used to package and deploy web applications. アーカイブ
WAS
 ProComm Script File (source code) ProComm
Sound format (Microsoft Windows RIFF WAVE) Media Player 音声
WAX
 ProComm compiled script ProComm
WB1
 Notebook Quattro Pro
WB2
 表計算 Quattro Pro 表計算
WBF
 Microsoft Windows Batch File Catch
WBK
 Document/workbook or Microsoft Word backup file WordPerfect for Win or Microsoft Word
WBT
 Norton Desktop Norton Desktop
WBT
 Wilsonware Batch file Windowsbatch
WCD
 Condes Event Data file Condes
WCD
 Macro token list WordPerfect for Win
WCH
 WordPerfect Macro Facility WP
WCM
 Data transmission file Microsoft Works
WCM
 Macro WordPerfect for Win
WCP
 Product information description WordPerfect for Win
WD
 InfoSelect Data file
WDB
 Database Microsoft Works
WDM
 Admin tool connection definition War FTP
WE?
 Packed mail FTN software
WEB
 WEB source code file Web Easy Professional
WebOOGL
 Web Object Oriented Graphics Library
WFB
 Turtle Beach WaveFront Bank AWAVE
WFD
 Turtle Beach WaveFront Drum AWAVE
WFM
 Form object dBASE Form Designer
WFN
 Font CorelDRAW
WFP
 Turtle Beach WaveFront Prog. AWAVE
WFT
 Web Family Tree GRAMPS
WFX
 Data file Windowsfax
WG1
 Worksheet Lotus 1-2-3/G 表計算
WG2
 Worksheet Lotus 1-2-3 for OS/2 表計算
WID
 Width table Ventura Publisher
Windows Imaging Format ImageX
WIN
 Windowsdow file FoxPro - dBASE
WIREFRAME
 Data EMSE mesh
WIX
 Windows Installer XML WiX
WIZ
 Page wizard Microsoft Publisher
WK1
 表計算 Lotus 1-2-3 version 2.x - Lotus Symphony 1.1+ 表計算
WK3
 表計算 Lotus 1-2-3 version 3.x 表計算
WK4
 表計算 Lotus 1-2-3 version 3.4 表計算
WKB
 Document WordPerfect for Win 文書
WKE
 表計算 Lotus 1-2-3 educational version 表計算
WKI
 Spreadsheet format Lotus 123 2x 表計算
WKQ
 Spreadsheet Quattro 表計算
WKS
 Spreadsheet Lotus 1-2-3 version 1A - Lotus Symphony 1.0, Microsoft Works 表計算
WKS
 Workspace Xlisp
WKZ
 Spreadsheet format Dos Navigator 表計算
WLK
 Graphics Virtus Walkthrough
WLK
 Walk Through for any game many
WMA
 Windows Media Audio audio file Windows Media Audio 音声/動画
WMC
 Backup of startup files by Windows MathCad autoexec.wmc MathCad
WMC
 Macro file WordPerfect for Win
WMC
 Text file WordMARC
WMDB
 Windows Media Player database Windows Media Player
Windows メタ ベクター画像
WIMP
 Graphics (Windows Magic Icon Palette)
WMV
 Windows Media Video video file 多数 動画
WN
 Text NeXT WriteNow
WNF
 Corel Draw Font File CorelDraw
WOA
 Swap file Windows 3.x
WOC
 Organization Windows OrgChart
WOW
 Music (8 channels) Grave Mod Player
WP
 WordPerfect Format WordPerfect 文書
WP5
 Document WordPerfect 5.x 文書
WPD
 Document WordPerfect 6.0 - PFS:WindowWorks 文書
WPD
 Windows printer driver (uninstallable) Windows
WPF
 Fax WorldPort
WPF
 Form WordPerfect
WPG
 WordPerfect Graphics vector graphics DrawPerfect
WPJ
 Watcom C/C++ IDE project IDE.EXE
WPK
 Macros WordPerfect for Win
WPL
 MediaRack Wave Playlist MediaRack
WPL
 Windows Media Playlist, for Windows Media Player
WPM
 Macros WordPerfect
WPS
 Text document Microsoft Works 文書
WQ!
 表計算 Quattro Pro 表計算
WQ1
 表計算 Quattro Pro 表計算
WR1
 表計算 Lotus Symphony 1.1 - 1.2 - 2 表計算
WRD
 Template Charisma
WRI
 Write editor format Write - WinWord 文書
WRK
 Spreadsheet Lotus Symphony 1.0 表計算
WRL
 VRML file
WRP
 アーカイブ Amiga WARP アーカイブ
WRS
 Windows Resource e.g. might indicate error if word cannot open WordPerfect for Win
WS
 APL Worksheet
WS
 Text file WordStar 5.0-6.0 文書
WS2
 Text file WordStar 2000 文書
WSD
 Document WordStar 文書
WSP
 Workspace Fortran PowerStation
WSQ
 Wavelet-packet Scalar Quantization Format
WSRC
 X-wais source
WST
 Text file WordStar 文書
WTR
 Working Timetable rules file Simsig
WTT
 Working Timetable timings file Simsig
WTF
 World of Warcraft Data File World of Warcraft
WTF
 WindowsTaper Data
WWB
 Button bar for document window WordPerfect for Win
WWK
 Keyboard layout WordPerfect for Win
WXH
 Program/Script File WaxHtml Web Programming Language
WXP
 Document EXP for Windows 文書
X
 アーカイブ X1.EXE アーカイブ
X
; 		AVS X image file SDSC Image Tool 画像
X
 DirectX 3D object
X
 LEX source code file
X
 XBasic Source code file Xbasic
X3D
 x3d and xdart Formats
XA
 XA audio file used in SimCity 3000 by Maxis, also by Sony Playstation 音声
XAR
 Xara file Project document
XBE
 Xbox Executable Xbox
XBM
 X11 Bitmap graphics file 画像
Gimp の画像ファイル The Gimp
XCK
 Extended crack file (usually text)
XCL
 Xtree for Windows Script file Xtree for Win
XDF
 OS/2 extended disk format image XDFCOPY.EXE アーカイブ
XDM
 Directory Manipulator for 32-bit Protected Mode Xenotech Research Labs
XE
 Xenon - for Associative 3D Modeling Ashlar-Vellum
XEX
 Xbox 360 Executable File
XFN
 Printer font Xerox 4045 - Ventura Publisher
XFR
 Ventura Publisher Bitmap Editor Font file
XFT
 24 pin printer font ChiWriter
XI
 Fast Tracker 2 instrument file AWAVE
XI
 Fastracker 2.0 Instrument File Fastracker 2.0
XIF
 Xerox Image Format Pagis Pro 2.0 and 3.0
XLA
 Add-in macro sheet Microsoft Excel
XLA
 XLib アーカイブ xlibpas2.zip アーカイブ
XLB
 Microsoft Excel ツールバー Microsoft Excel
XLC
 Microsoft Excel Chart Microsoft Excel
XLD
 Microsoft Excel ダイアログ Microsoft Excel
XLK
 Microsoft Excel Archive Microsoft Excel
XLL
 Microsoft Excel 動的リンクライブラリ Microsoft Excel
XLM
 Microsoft Excel マクロファイル Microsoft Excel
XLS
 Microsoft Excelの表計算ファイル Microsoft Excel 表計算
XLSB
 Microsoft Excel 2007 Binary Workbook (BIFF12)(Spreadsheets) Microsoft Excel 2007 (see Microsoft Office 2007 file extensions)
XLSM
 Macro-Enabled Workbook (Spreadsheets) Microsoft Excel 2007 (see Microsoft Office 2007 file extensions) 表計算
XLSX
 Office Open XML Workbook (Spreadsheets) Microsoft Excel 2007 (see Microsoft Office 2007 file extensions) 表計算
XLT
 Microsoft Excel テンプレート Microsoft Excel
XLT
 Translation table Lotus 1-2-3 - Symphony - Procomm Plus
XLV
 Microsoft Excel Module Microsoft Excel
XLW
 Microsoft Excel Workbook Microsoft Excel
XM
 Fast Tracker 2 extended module AWAVE, Mod4Win, FastTracker, ImpulseTracker
XM
 Music format FastTracker - Cubic Player 音声
XMOD
 Monarch Model Monarch Professional
XMI
 Compressed eXtended MIdi music 音声
eXtensible Markup Language file
XMF
 eXtensible Music Format 音声
XMPZ
 XML Miradi Project Zipfile Miradi
XMV
 video Xbox 動画
XNF
 Standard Network File form
Xnn
 Secondary indexes Borland Paradox
XOF
 RenderMorphics
XP
 eXtended Pattern FastTracker 2.0
XPM
 X11 Pixel Map graphics file
XPS
 Open XML Paper Specification / OpenXPS Microsoft, Adobe PDF files
XQT
 Executable file Waffle
XQT
 Macro sheet SuperCalc
XRF
 Cross-reference file
XSF
 data Microsoft InfoPath file
XML Sharable Playlist Format
XTB
 External translation table LocoScript
XTP
 XTreeGold overlay XTreeGold
XVF
 Xyngo Video File Xyngo Video Board
XWD
 X Window System window dump image graphics file SDSC Image Tool
XWK
 Keyboard mapping Crosstalk
XWP
 Session Crosstalk
XWP
 Text file Xerox Writer 文書
XX
 Encoded file (ASCII) XXENCODE
XXE
 Encoded file (ASCII) XXENCODE
XY
 Text file XY Write
XY3
 Text file XYWrite III
XYW
 Text file XyWrite III
XYZ
 Molecular coordinates XMol, RasMol
XZ
 圧縮ファイル XZ Utils
Y
 Archive (Amiga) Yabba アーカイブ
Y
 YACC 文法定義ファイル Yacc/Bison
YAL
 Data custom/nature.yal Arts & Letters
YC
 Archive YACC (YAC.EXE) アーカイブ
Ynn
 Secondary index Borland Paradox
YMP
 Yast Meta Package YAST2 (SUSE Linux Package Manager)
YST
 Data YASRT Raytracer scene
YRD
 Yard Tracks File FYM
YUV
 Graphics format (YUV)
YY
 Bison grammar file Bison
YZ
 アーカイブ YAC アーカイブ
Z
 アーカイブ WindowsZipNT - COMPRESS - PACK アーカイブ
Z01-Z99
 Split WinRAR Archive アーカイブ
Z2S
 Zoo Tycoon 2 save
Z3
 Infocom game module
Z3D
 Zmodeler-file Zmodeler 1 & 2
Z64
 Nintendo 64 ROM Project64 Nintendo 64 emulator
Z80
 Snapshot ZX Spectrum emulator by g.a.lunter
ZAD
 ZFax digitized voice file ZFax
ZDG
 Compressed ZiffNet text document Zview
ZED
 BitTorrent Link Podmailing
ZER
 Data file
ZIP
 ZIPアーカイブ PKZip, WinZip, macOS、他多数 アーカイブ
(無し)
 ID3タグ、MP3 オーディオ用コンテナ Studio3、他オーディオプレーヤ等

参照[編集]

[脚注の使い方]
  1. ^ WebSphere Message broker Help
  2. ^ Zvereva, O.M. (2004年). “Часть 2: ОПЕРАЦИОННАЯ СИСТЕМА WINDOWS 2000 PROFESSIONAL: КОНСОЛИ УПРАВЛЕНИЯ. ТИПОВЫЕ ЗАДАЧИ АДМИНИСТРИРОВАНИЯ” (PDF) [Part 2: The Windows 2000 Professional operating system: Control console; standard administration tasks] (Russian). ОПЕРАЦИОННЫЕ СИСТЕМЫ. p. 9. 2010年3月18日閲覧。 “Несколько оснасток могут быть объединены администратором в инструмент (также называется документом), который сохраняется в файле с расширением .msc (Management Saved Console). {Translation: An administrator can gather a few frameworks into an instrument (also known as a document) stored in a file with the suffix .msc (Management Saved Console).]”
  3. ^ Shields, Paul; Crump, Ralph; Weiss, Martin (2000). Windows 2000 server: system administration handbook. Global knowledge professional reference. Syngress. pp. 51-52. ISBN 9781928994091. https://books.google.co.jp/books?lr=&id=sEZUk3ZM-sEC&redir_esc=y&hl=ja 2010年3月18日閲覧. "A powerful feature of the MMC [...] enables adminstrators to create custom tools [...], simply snap in the desired tools, and then the console can be saved as a Management Saved Console (MSC) file [...]" 
  4. ^ “Article ID: 222330”. Microsoft Support. Microsoft (2004年8月13日). 2010年2月10日閲覧。 “When sending HTML messages with an attached Microsoft Office 2000 document, the message is sent as an Outlook HTML message [...]. The Oledata.mso file contains necessary information to properly render the attachment in the message in its originating program.”
  5. ^ http://www.fileformat.info/ext/m.htm
  6. ^ “.NOMEDIAファイル拡張子”. www.file-extension.info. 2019年7月24日閲覧。
  7. ^ Puppy Linux. “Package management”. 2010年4月2日閲覧。
  8. ^ RFC 5334 Ogg Media types

関連項目[編集]

外部リンク[編集]

形式
属性
組織
操作
リンク
管理
カテゴリ カテゴリ
マルチメディア圧縮フォーマット
動画ファイルフォーマット
ISO/IEC
ITU-T
SMPTE
AOMedia
IETF
SAC
その他
可逆圧縮
開発停止
音声ファイルフォーマット
ISO/IEC
ITU-T
IETF
3GPP
ETSI
SAC
その他
開発停止
Bluetooth
画像ファイルフォーマット
IEC, ISO,
ITU-T, W3C, IETF
その他
マルチメディアコンテナフォーマット
ISO/IEC
ITU-T
IETF
SMPTE
3GPP
その他
団体
圧縮技術についてはデータ圧縮を、コーデックについてはデータ圧縮・伸張を行うコーデックを参照
「https://ja.wikipedia.org/w/index.php?title=ファイルフォーマット一覧&oldid=99152467」から取得