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Almost Every file format in the world!
A
ABK Corel Draw AutoBackup
ACL Corel Draw 6 keyboard accelerator
ACM Used by Windows in the system directory
ACP Microsoft Office Assistant Preview file
ACT Microsoft Office Assistant Actor file
ACV OS/2 drivers that compress and decompress audio data
AD After Dark screensaver
ADB Appointment database used by HP 100LX organizer
ADD OS/2 adapter drivers used in the boot process
ADM After Dark MultiModule screensaver
ADP Used by FaxWorks to do setup for fax modem interaction
ADR After Dark Randomizer screensaver
AFM Adobe font metrics
AF2 ABC Flowchart file
AF3 ABC Flowchart file
AI Adobe Illustrator drawing
AIF Apple Mac AIFF sound
ALB JASC Image Commander album
ALL Arts & Letters Library
AMS Velvert Studio music module (MOD) file
ANC Canon Computer Pattern Maker file that is a selectable list of pattern colors
ANI Animated Cursor
ANS ANSI text
API Application Program Interface file; used by Adobe Acrobat
APR Lotus Approach 97 file
APS Microsoft Visual C++ file
ARC LH ARC (old version) compressed archive
ARJ Robert Jung ARJ compressed archive
ART Xara Studio drawing
ART Canon Crayola art file
ASA Microsoft Visual InterDev file
ASC ASCII text
ASD WinWord AutoSave
ASM Assembler language source file
ASP Active Server Page (an HTML file containing a Microsoft server-processed script)
ASP Procomm Plus setup and connection script
AST Claris Works "assistant" file
ATT AT&T Group 4 bitmap
AVI Microsoft Video for Windows movie
AWD FaxView document
B
BAK Backup file
BAS BASIC code
BAT Batch file
BFC Windows 95 Briefcase document
BG Backgammon for Windows game
BI Binary file
BIF GroupWise initialization file
BIN Binary file
BK Sometimes used to denote backup versions
BK$ Also sometimes used to denote backup versions
BKS An IBM BookManager Read bookshelf
BMK An A bookmark file
BMP Windows or OS/2 bitmap
BM1 Apogee BioMenace data file
BRX A file for browsing an index of multimedia options
BSP Quake map
BS1 Apogee Blake Stone data file
BTM Batch file used by Norton Utilities
B4 Helix Nuts and Bolts file
C
C C code
CAB Microsoft cabinet file (program files compressed for software distribution)
CAL CALS Compressed Bitmap
CAL Calendar schedule data
CAS Comma-delimited ASCII file
CAT IntelliCharge categorization file used by Quicken
CB Microsoft clean boot file
CCB Visual Basic Animated Button configuration
CCF Multimedia Viewer configuration file used in OS/2
CCH Corel Chart
CCM Lotus CC:Mail "box" (for example, INBOX.CCM)
CDA CD Audio Track
CDF Microsoft Channel Definition Format file
CDI Phillips Compact Disk Interactive format
CDR Core Draw drawing
CDT Corel Draw template
CDX Corel Draw compressed drawing
CEL CIMFast Event Language file
CFB Comptons Multimedia file
CFG Configuration file
CGI Common Gateway Interface script file
CGM Computer Graphics Metafile
CH OS/2 configuration file
CHK File fragments saved by Windows Disk Defragmenter or ScanDisk
CHP Ventura Publisher chapter
CIL Clip Gallery download package
CIM Sim City 200 file
CIN OS/2 change control file that tracks changes to an INI file
CK1 iD/Apogee Commander Keen 1 data file
CK2 iD/Apogee Commander Keen 2 data file
CK3 iD/Apogee Commander Keen 3 data file
CK4 iD/Apogee Commander Keen 4 data file
CK5 iD/Apogee Commander Keen 5 data file
CK6 iD/Apogee Commander Keen 6 data file
CLASS Java class
CLP Windows Clipboard file
CLS Visual Basic Class Module
CMD Command file for Windows NT (similar to a DOS .BAT file)
CMD DOS CP/M command file
CMD dBase-II program file
CMF Corel Metafile
CMP JPEG Bitmap
CMP Address document
CMV Corel Move animation
CMX Corel Presentation Exchange image
CNF Configuration file used by Telnet, Windows, and other applications
CNM Windows application menu options and setup file
CNQ Compuworks Design Shop file
CNT Windows (or other) system content files for the help index and other purposes
COB trueSpace2 object
COD Microsoft C compiler output as displayable assembler with original C as comments
COM Command file (program)
CPD Fax Cover document
CPE Fax Cover document
CPI Microsoft MS-DOS code page information file
CPL Control Panel extension
CPL Corel colour palette
CPP C++ code
CPR Corel Presents Presentation
CPT Corel Photo-Paint image
CPX Corel Presentation Exchange Compressed drawing
CRD Cardfile file
CRP Corel Presents Run-Time Presentation
CRT Certificate file
CSC Corel Script
CSP PC Emcee On-Screen image
CSV Comma-separated values file
CT Scitex CT Bitmap
CTL Used in general to mean a file containing control information.
CUE Microsoft Cue Cards data
CUR Windows Cursor
CUT Dr Halo bitmap
CV Corel Versions archive
CV Microsoft CodeView information screen
CWK Claris Works data file
CWS Claris Works template
CXX C++ source code file
D
DAT Data file
DAT WordPerfect Merge Data
DBF Aston-Tate dBASE database
DBX DataBeam image
DCR Shockwave file
DCS Desktop Color Separation file
DCX Fax image (based on PCX)
DDF BTRIEVE database
DEF SmartWare II data file
DEF C++ Definition
DER Certificate file
DIB Device-Independent Bitmap
DIC Dictionary
DIF Data Interchange Format spreadsheet
DIR Macromedia Director file
DIZ Description file
DLG C++ Dialogue Script
DLL Dynamic-Link Library
DMF X-Trakker music module (MOD) file
DOC FrameMaker or FrameBuilder document
DOC WordStar document
DOC WordPerfect document
DOC Microsoft Word document
DOT Microsoft Word document Template
DPR Borland Delphi project header file
DRV Driver
DRW Micrografx Designer/Draw
DSG DooM saved game
DSM Dynamic Studio music module (MOD) file
DSP Microsoft Developer Studio project
DSQ Corel QUERY file
DSW Microsoft Developer Studio workspace
DWG AutoCAD drawing eXchange format
DXF AutoDesk Drawing Interchange format
E
EMF Enhanced Windows Metafile
ENC Encore file
EPS Encapsulated PostScript image
ER1 ERWin file
ERX ERWin file
EVY Envoy document
EWL Microsoft Encarta document
EXE Executable file (program)
F
F FORTRAN file
F77 FORTRAN file
F90 FORTRAN file
FAR Farandole Composer music module (MOD) file
FAV Microsoft Outlook navigation bar
FAX FAX Type image
FH3 Aldus Freehand 3 drawing
FIF Fractal image file
FITS CCD camera image
FLC AutoDesk FLIC animation
FLI AutoDesk FLIC animation
FLT Corel filter
FLT StarTrekker music module (MOD) file
FMB Oracle binary source code for form, version 4.0 and later
FMT Oracle text format of form, version 4.0 and later
FMT Microsoft Schedule+ print file
FMX Oracle executable form, version 4.0 and later
FOG Fontographer font
FON System font
FOR FORTRAN file
FOT Font-related file
FP FileMaker Pro file
FP1 Flying Pigs for Windows data file
FP3 FileMaker Pro file
FPX FlashPix bitmap
FRM Form
FRM FrameMaker or FrameBuilder document
FRM Oracle executable form version 3.0 and earlier
FRM Visual Basic form
FRM WordPerfect Merge form
FRX Visual Basic form stash file
G
GAL Corel Multimedia Manager album
GCP Ground Control Point file used in image processing of remote sensing data .
GED Graphic Environment Document (drawing)
GEM GEM metafile
GEN Ventura-Generated text file
GFC Patton&Patton Flowcharting 4 flowchart file
GFI Genigraphics Graphics Link presentation
GFX Genigraphics Graphics Link presentation
GID Windows 95 global index file (containing help status)
GIF CompuServe bitmap
GIM Genigraphics Graphics Link presentation
GIX Genigraphics Graphics Link presentation
GNA Genigraphics Graphics Link presentation
GNX Genigraphics Graphics Link presentation
GRA Microsoft Graph
GRD Grid file, used in image processing of remote sensing data often to form map projections.
GRP Program Manager Group
GTK Graoumftracker (old) music module (MOD) file
GT2 Graoumftracker (new) music module (MOD) file
GWX Genigraphics Graphics Link presentation
GWZ Genigraphics Graphics Link presentation
GZ Unix Gzip compressed file
H
H C program header
HED HighEdit document
HEL Microsoft Hellbender saved game
HEX Macintosh BinHex 2.0 file
HGL HP Graphics Language drawing
HLP Help file
HOG Lucas Arts Dark Forces WAD file
HPJ Visual Basic Help Project
HPP C++ program header
HQX Macintosh BinHex 4.0 file
HST History file
HT HyperTerminal
HTM Hypertext document
HTML Hypertext document
HTX Extended HTML template
I
ICA Citrix file
ICB Targa bitmap
ICM Image Color Matching profile file
ICO Windows Icon
IDD MIDI Instrument Definition
IDQ Internet Data Query file
IFF Amiga ILBM
IGF Inset Systems metafile
IIF QuickBooks for Windows interchange file
IMA WinImage file
IMG GEM image
INC Assembler language or Active Server include file
INF Information file
INI Initialization file
INP Oracle source code for form, version 3.0 and earlier
INS InstallShield install script
INS X-Internet sign-up file
ISO Lists the files on a CD-ROM; based on the ISO 9660 CD-ROM file system standard
ISP X-Internet sign-up file
ISU InstallShield uninstall script
IT Impulse Tracker music module (MOD) file
IW Idlewild screensaver
J
JAR Java ARchive file (a compressed file for applets and related files)
JAVA Java source code
JBF Paint Shop Pro image browser file
JFF JPEG bitmap
JIF JPEG bitmap
JMP SAS JMPDiscovery chart-to-statistics file
JN1 Epic MegaGames Jill of the Jungle data file
JPEG JPEG bitmap
JPG JPEG bitmap
JS _JavaScript source code
JTF JPEG bitmap
