F I L E E XT E NT IO NS
1 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Numbers and symbols
000-999 | Used to number old (backup) versions of files (for
000-999 | example, CONFIG.SYS when changed by an installation
000-999 | program); also used to number related data files for
000-999 | multiple users of a small-scale PC application
10o
Embroidery machines graphics file - Toyota (binary)
12M
Lotus 123 97 Smartmaster file
123
Lotus 123 97 file
2GR
VGA Graphics driver/configuration files under Windows (binary)
3GR
VGA Graphics driver/configuration files under Windows (binary)
3DM
3D NURBS modeler, Rhino ?????
3DS
A file in 3D Studio (for DOS) format
386
A file for use in an 80386 or higher microprocessor
4GE
Informix 4GL compiled code
4GL
Informix 4GL source code
669
Composer 669, Unis Composer music mod file
669
669 tracker module ?????
#01 and | method of numbering picture files for a roll of film
higher | that has been scanned for computer presentation
$$$
Used by OS/2 to keep track of archived files
@@@
| Screen files used in the installation and instruction
@@@
| on use of such applications as M$ Codeview for C
A (08/23/00)
A86
A86 assembly source shareware compiler
A
|ADA source code
A
|Object code library
A
|Assembly programming source code
AAM
Authorware shocked file
AAS
Authorware shocked packet
ABC
Micrografx ABC Flowcharter
ABF
Adobe Binary Screen Font
ABK
CorelDRAW automatic backup
ABM
PhotoPlus album
ABS
Abscissa data
ACB
ACMB graphic
ACE
| Compression file format associated with a
ACE
| program called The Ace Archiver (binary)
ACL
|Corel Draw 6 keyboard accelerator
ACL
|Axialis Cursor Library
ACM
|AUDIO CONVERTER MODULE
ACM
|Used by Windows in the system directory
ACP
M$ Office Assistant Preview file
ACR
|ACR-NEMA medical image file
ACR
|American College of Radiology file format
ACT
|M$ Office Assistant Actor source code file
ACT
|Parson's Announcements file (binary)
ACV
OS/2 drivers that compress and decompress audio data
AD
After Dark screen saver data
ADA
Ada source text (non-GNAT) (ASCII)
ADB
Ada source text body (GNAT) (ASCII)
ADB
Appointment database used by HP 100LX organizer
ADD
OS/2 adapter drivers used in the boot process
ADF
Amiga Disk File
ADF
ARC data file
ADI
AutoCAD Device-Independent binary plotter image format
ADL
QEMM MCA adapter description library
ADM
After Dark MultiModule screensaver
ADN
Lotus 1-2-3 add-in
ADP
|AOL HTML file (ASCII)
ADP
|Astound Dynamite file
ADP
|Used by FaxWorks to do setup for fax modem interaction
ADR
After Dark Randomizer screensaver
ADS
Ada source text specification (GNAT) (ASCII)
ADT
AdTech Fax document
ADX
Archetype Designer document
AFM
|ADOBE FONT METRICS ASCII file format
AFM
|used for storing readable fonts
AFT
Micrografx ABC Flowcharter template
AFW
Micrografx ABC Flowcharter working file
AF2
Micrografx ABC Flowcharter 2
AF3
Micrografx ABC Flowcharter 3
AFM
Adobe Font Metrics Format (Ray Trace)
AGA
Agenda File
AGF
Atlas geodata (GIS) file
AI
Adobe Illustrator drawing
AI
Encapuslated PostScript image file (binary)
AIF
| Audio Interchange File, a sound format used by
AIF
| Silicon Graphics and Macintosh applications (binary)
AIFC
Similar to AIF (compressed) (binary)
AIFF
| Audio Interchange File, a sound format used by
AIFF
| Silicon Graphics and Macintosh applications (binary)
AIFF
| Similar to AIF
AIM
AOL Instant Messenger Launch
AIS
|ACDSee Image Sequence file
AIS
|Velvet Studio Instruments
AIS
|Xerox Array of Intensity Samples graphic
(binary)
AKW
| Contains all A-keywords in the RoboHELP Help
AKW
| project Index Designer not associated with topics
AL
ALAW
A-law sound file
European telephony format audio
ALB
JASC Image Commander album
ALD
Aldus Pagemaker file
ALL
Arts & Letters Library
AMF
Advanced Module Format sound file
AMS
|Velvert Studio music module (MOD) file
AMS
|Extreme's Tracker module format
ANC
| Canon Computer Pattern Maker file that is
ANC
| a selectable list of pattern colors
ANI
Animated Cursor
ANM
|DeluxePaint animation
ANM
|Lucas Arts animation
ANN
Windows Help annotation
ANS
|ANSI character animation
ANS
|ANSI text (ASCII)
ANT
saved game file in the original SimAnt for Windows
APD
Aldus printer file
API
Application Program Interface file; used by Adobe Acrobat
APP
|Gem application
APP
|Symphony add in application
APP
|dBase Application Generator object file
APP
|DR-DOS executable application
APP
|Atari executable application
APP
|FoxPro generated application
APR
|Lotus Approach 97 file
APR
|ArcView project file
APS
M$ Visual C++ file
APX
Borland C++ 4.5 Appexpert database
ARC
Lempel-Ziv-Huffman (old version) compressed archive (binary)
ARI
Aristotle audio file
ARJ
Robert Jung ARJ compressed archive (binary)
ARS
WordPerfect audio resource file
ART
| Used by AOL to designate files compressed using
ART
| the Johson-Grace compression algorithm (binary)
ART
|Another Ray Tracer format
ART
|Ashton-Tate Byline graphic
ART
|Canon Crayola art file (binary)
ART
|Clip Art file format
ART
|Crayola Art graphic
ART
|PFS First Publisher graphic
ART
|VORT (Unix) ART ray tracer graphic
ART
|Xara Studio drawing
ASA
M$ Visual InterDev file
ASC
|American Standard Code for Information (ASCII)
ASC
| Exchange file. An unformatted text file. Also
ASC
| known as plain text, vanilla text, or flat text
ASC
|PGP armored encrypted file
ASD
|Astound presentation
ASD
|WinWord AutoSave
ASE
Velvet Studio sample
ASF
|M$ Advanced Streaming Format file
ASF
|Active Streaming Format
ASH
TASM 3.0 assembly language header file
ASI
|Turbo C assembler include file
ASI
|Borland C++ assembler include file
ASM
Assembler language source file (uncompiled)
ASO
|Astound Dynamite Objects
ASO
|TASM object file
ASP
|Association of Shareware Professionals Ombudsman notice
ASP
|HTML Script
ASP
|Active Server Page (an HTML file containing a M$
ASP
| server-processed script) (ASCII)
ASP
|Procomm Plus setup and connection script (ASCII)
ASP
|Astound Presentation file
ASX
Active Streaming Format
AST
|Astound multimedia file
AST
|Claris Works "assistant" file
ASV
DataCAD Autosave file
ASX
|Cheyenne Backup script (ASCII)
ASX
|M$ Advanced Streaming Redirector file
ASX
|Video file
ATT
AT&T Group 4 bitmap (binary)
AU
|æ-law (mu-law) audio file Originally a UNIX format
AU
|Sun/NeXT/DEC/(UNIX) sound file
AUX
Generic auxiliary file; reserved word in DOS
AVB
Inculan Anti-Virus virus infected file
AVD
Avery LabelPro ListManager Data file
AVI
M$ Audio Video Interleaved file format for Windows movie
AVR
Audio Visual Research file format
AVS
|APPLICATION VISUALIZATION SYSTEM:
AVS
| Digital Video Interactive (.dvi) file
AVX
ArcView Extension file
AW
HP AdvanceWrite text
AWD
Fax Viewer document
AWK
|(FROM AUTOSPELL no identification)
AWK
|UNIX parsing program
AWR
Telsis file extension format for digitally stored audio.
AWM
Animation Works movie
AXD
Avery LabelPro ListManager Data file
AXX
| ARJ compressed files from a multi-volume archive
AXX
| (XX = a number from 01 to 99) (binary)
A3M
unpackaged Authorware MacIntosh file
A4M
unpackaged Authorware MacIntosh file
A4P
Authorware file packaged without runtime
A3W
unpackaged Authorware windows file
A4W
unpackaged Authorware windows file
A5W
unpackaged Authorware windows file
B (08/24/00)
B
BASIC source code. Beginners All-purpose Symbolic Instruction Code.
B4
Helix Nuts and Bolts file
B64
Mime Base 64 coded file (compressed) (binary)
BAK
|Backup file. This extension is given to files when they
BAK
| are replaced with another file with the same name.
BAS
|Executable text file in BASIC (Beginners All-purpose Symbolic
BAS
| Instruction Code) for the Basic language interpreter.
BAR
|Unix BAR archive file
BAR
|dBase horizontal bar menu object
BAT
Executable Batch file (ASCII). Text file of commands to DOS.
BB
Papyrus database backup
BBL
TeX or BibTeX bibliography
BBM
Deluxe Paint brush file
BBS
Bulletin board system text file
BCH
dBase Batch process object
BCP
Borland C++ makefile
BBX
Boom Box for Windows
BCK
VMS/VAX backup
BCM
M$ Works 4.0 Communication
BCW
Borland C++ workspace settings
BDB
M$ Works 4.0 database
BDF
|Adobe Glyph Bitmap Distribution Format file
BDF
|West Point Bridge Designer program
BDR
MS Publisher border
BFC
Windows 95 Briefcase document
BFX
BitFax Pro ViewFax
BG
Backgammon for Windows game
BGA
OS/2 bitmapped graphic
BGI
Borland Graphics Interface, A graphics program file
BGL
| from M$ concerning scenery files from the
BGL
| well known Flight Simulator
BHX
Compressed file (binary)
BI
Binary file (binary)
BIB
|BibTeX bibliography source
BIB
|ASCII bibliography
BID
Parson's Announcements file (binary)
BIF
|Binary Image Format (Graphics)
BIF
|WordPerfect initialization file
BIF
|GroupWise initialization file
BIFF
XLITE 3D file format
BIG
Text file created from other text files (ASCII) (tgs)
BIL
File Band Interleaved by Line (Graphic)
BIN
Binary file (binary)
BIN
Macbinary II encoded file
BIP
File Band Interleaved by Pixel (graphic)
BIT
|Bitmap graphic
BIT
|ASCII text file, fragment of larger file(s)
BK
JetFax Faxbook; sometimes backup version
BK!
WordPerfect backup
BK$
Sometimes used to denote backup versions
BKP
Backup file (various)
BKS
|An IBM BookManager Read bookshelf
BKS
|M$ Works 4.0 Sheet or Chart
BKX
Backup file where X = 1 to 9
BLG
BibTeX log
BM1
Apogee BioMenace data file (binary)
BMF
Corel! image similar to bmp
BMK
|A bookmark file (ASCII)
BMK
|CNM Bookmark Collection (content type MIME)
BMK
|Windows Help bookmark
BMP
Windows - OS/2 bitmap graphics file (binary)
BNK
|Adlib instrument bank
BNK
|step-processed ASCII file
BOO
Kermit bootstrap protocol binary file
BOOK
Adobe FrameMaker Book
BOX
A mailbox in Notes
BPL
Borland Delphi 4 packed library (binary)
BQS
UNKNOWN (help appreciated)
BQY
BrioQuery file
BPS
M$ Works 4.0 Document
BRX
A file for browsing an index of multimedia options
BS1
Apogee Blake Stone data file
BS_
M$ Bookshelf Find Menu shell extension
BSA
BSARC file archive
BSC
MS Developer Studio (MSDev) browser information file
BSP
Quake map
BSQ
Band Sequential Graphic file
BST
BibTeX bibliography style
BTM
Batch file used by Norton Utilities
BTN
Parson's Announcements file (binary)
BUD
Backup disk for Quicken
BUN
CakeWalk Audio Bundle file (a MIDI program)
BUS
Business Card Image file (Parson's Announcements)
B_W
Atari black and white graphic
BW
Silicon Graphics Inc Black and White image file
BYU
A file in a Movie BYU format
C
C
C code (source file)
C01
Typhoon wave files ?????
CAB
| M$ cabinet file (program files compressed
CAB
| for software distribution) (binary)
CAD
used by the drafting program "Drafix Cad">by Softdesk
CAL
|CALS Compressed Bitmap (binary)
CAL
|Calendar schedule data
CAM
Casio camera format
CAP
Compressed music file format (binary)
CAR
Announcements document file (card) ?????
CAS
Comma-delimited ASCII file
CAT
IntelliCharge categorization file used by Quicken
CB
M$ clean boot file
CBI
Column binary formatted file (used in IBM mainframe systems)
CCA
cc:mail ?????
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)
CCO
CyberChat data file
CCT
Macromedia Director Shockwave cast
CDA
CDDA Audio Track File
CDB
CardBase Document
CDF
|M$ Channel Definition Format file (ASCII)
CDF
|Document (Content type MIME)
CDI
Phillips Compact Disk Interactive format
CDP
ColorDesk image
CDR
CorelDraw drawing (graphics) (binary)
CDR
Raw Audio-CD data
CDT
Corel Draw template
CDX
|Corel Draw compressed drawing (binary)
CDX
|M$'s Visual Foxpro Index
CDX
|CardBase import/export file
CEL
CIMFast Event Language file
CER
Certificate file (MIME x-x509-ca-cert)
CER
Certificate Image file (Parson's Announcements)
CFB
Compton's Multimedia file
CFG
Configuration file
CFM
Cold Fusion template files
CGI
Common Gateway Interface script file (ASCII)
CGM
Computer Graphics Metafile (binary)
CH
OS/2 configuration file
CHK
File fragments saved by Windows Disk Defragmenter or ScanDisk
CHM
Compiled HTML file
CHR
Character Sets (Font files)
CHP
Ventura Publisher chapter
CHT
|ChartViewer file
CHT
|Harvard Graphics vector file (binary)
CIL
Clip Gallery download package
CIM
Sim City 200 file
CIN
OS/2 change control file that tracks changes to an INI file
CK#
iD/Apogee Commander Keen # (where # is a number) data file
CLASS
CLL
Java class
Crick Software Clicker File
CLP
Windows Clipboard file (binary or ASCII)
CLS
Visual Basic Class Module
CMD
|Command file for Windows NT (similar to a DOS .BAT file), OS/2
CMD
|DOS CP/M command file
CMD
|dBase-II program file
CMF
Corel Metafile
CMP
|JPEG Bitmap (binary)
CMP
|Address document
CMV
Corel Move animation
CMX
Corel Presentation Exchange image
CNF
| Configuration file used by Telnet, Windows,
CNF
| and other applications with varying internal formats
CNM
Windows application menu options and setup file
CNQ
Compuworks Design Shop file
CNT
| Windows (or other) system content files for the
CNT
| help index and other purposes
COB
trueSpace2 object
COD
| M$ C compiler output as displayable machine
COD
| language/assembler with original C as comments
COM
Command file (binary) (Executable)
CPD
|Corel PrintOffice file (drawing)
CPD
|Fax Cover document
CPE
Fax Cover document
CPI
M$ MS-DOS code page information file
CPL
|Control Panel extension
CPL
|Corel color palette
CPO
Corel Print House file
CPP
C++ code
CPR
Corel Presents Presentation
CPT
Corel Photo-Paint image
CPT
EconoWatch Document
CPX
Corel Presentation Exchange Compressed drawing (binary)
CR1
EconoWatch Document
CRD
Cardfile file
CRP
Corel Presents Run-Time Presentation
CRT
Internet Security Certificate
CSC
Corel Script (ASCII)
CSP
PC Emcee On-Screen image
CSS
Cascading Style Sheet file (ASCII)
CST
|Macromedia Director "Cast" (resource) file
CST
|Cost module
CSV
Comma-separated values file, DOS or Win
CT
|SciTex Continuous Tone bitmap (binary)
CT
|A graphic file associated with the Paint Shop Pro Graphic
CT
| Editor Used in general to mean a file containing
CT
| control information.
CTL
|FAXWorks uses it to keep information about each
CTL
| fax sent and received.
CTL
|Control data file (tgs)
CTR
Comm Term Document (Content type MIME)
CUE
M$ Cue Cards data
CUR
Windows Cursor
CUT
Dr Halo bitmap (graphics) (binary)
CV
Corel Versions archive (binary)
CV
M$ CodeView information screen
CWK
Claris Works data file
CWL
Claris Works file
CWS
Claris Works template
CXT
| Macromedia Director protected (not editable)
CXT
| "Cast" (resource) file
CXX
C++ source code file
D
DAT
|Data file, "catchall" file, (ASCII/Binary)
DAT
|WordPerfect Merge Data
DAT
|Extension used for some MPEG formats
DB
|Borderland's Paradox 7 tables
DB
|Paradox List
DBC
M$'s Visual Foxpro Database container
DBF
Aston-Tate dBase database
DBX
|DataBeam image
DBX
|M$'s Visual Foxpro Table
DCM
DCM model format
DCR
|Shockwave file
DCR
|Macromedia Director Protected Movie (non-editable)
DCS
Desktop Color Separation file
DCT
M$'s Visual Foxpro Database container
DCU
Delphi compiled unit file
DCX
|M$'s Visual Foxpro Database container
DCX
|Fax image (based on PCX) (binary)
DCX
|Macros (X equal number) ?????
DCX
|Intel SatisFAXtion file
DC5
DataCAD Drawing files
DDF
BTRIEVE database ?????
DDIF
| Digital Equipment or Compaq format. Used for storing
DDIF
| images and their word processing documents
DEF
|SmartWare II data file
DEF
|C++ Definition
DEFI
Oracle 7 de-install script (ASCII)
DEM
USGS standards for Digital Elevation Models
DEL
Has to do with graphics files, eg, BMP files
DER
Internet Security Certificate
DEWF
DGN
Macintosh SoundCap/SoundEdit recorded instrument format
Microstation95 CAD drawing file
DIB
Windows - OS/2 Device-Independent Bitmap (graphics) (binary)
DIC
Dictionary (binary or ASCII)
DIF
Data Interchange Format spreadsheet
DIG
|Digilink format
DIG
|Sound Designer I audio file
DIR
|Macromedia Director movie
DIR
|Directory text file (tgs) (ASCII)
DIZ
Description file (text file, shareware) (ASCII)
DLG
C++ Dialogue Script (ASCII)
DLS
DownLoadable Sound
DLL
Dynamic-Link Library (binary)
DMF
X-Trakker music module (MOD) file
DOC
|FrameMaker or FrameBuilder document
DOC
|WordStar document
DOC
|WordPerfect document
DOC
|M$ Word document
DOC
|DisplayWrite document
DOT
M$ Word document Template
DPL
Borland Delphi 3 packed library
DPR
Borland Delphi project header file
DRAW
Acorn's object-based vector image file
DRV
Driver file (binary)
DRW
Micrografx Designer/Draw (binary)
DSF
Micrografx Designer v7.x
DSG
DooM saved game
DSM
Dynamic Studio music module file
DSP
M$ Developer Studio project
DSQ
Corel QUERY file
DST
Embroidery machines graphics file - Tajima (binary)
HUS
Embroidery machines graphics file - Viking (binary)
DSW
M$ Developer Studio workspace
DTD
SGML Document Type Definition (DTD) file
DTED
Digital terrain elevation data (geographic data format)
DTM
DigiTrakker module
DTF
Symantec Q&A relational database data file
DUN
M$ Dial-up Networking Export file
DV
Digital video file (MIME)
DVI
Digital Video Interactive file
DWD
DiamondWare digitized file
DWG
|Autocad Drawing files
DWG
|AutoCAD drawing, or older Generic CADD drawing format
DXF
| Autodesk Drawing Interchange (eXchange) format,
DXF
| a text representation of the binary DWG format (ASCII)
DXF
|Data Exchange File
DXR
Macromedia Director protected (not editable) movie file
E
E
Eiffel source code
EDA
Ensoniq ASR disk image
EDE
Ensoniq EPS disk image
EDD
Element Definition Document (FrameMaker+SGML documents)
EDK
Ensoniq KT disk image
EDQ
Ensoniq SQ1/SQ2/KS32 disk image
EDS
Ensoniq SQ80 disk image
EDV
Ensoniq VFX-SD disk image
EFA
Ensoniq ASR file
EFE
Ensoniq EPS file
EFK
Ensoniq KT file
EFQ
Ensoniq SQ1/SQ2/KS32 file
EFS
Ensoniq SQ80 file
EFV
Ensoniq VFX-SD file
ELA
Embroidery machines graphics file - Old (binary)
ELI
Encarta Encyclopedia Article List
EMD
ABT Extended MoDule
EMF
Enhanced Windows Metafile image file (binary)
EML
M$ Outlook Express mail message (MIME RFC 822)
ENC
Encore file
ENFF
Neutral File Format extension
EPHTML Enhanced Perl-parsed HTML
EPS
|Encapsulated PostScript image
EPS
|TIFF preview file
ER1
ERWin file
ERM
CNM EditingRoom Script
ERR
| Stores the error messages that result when the
ERR
| RoboHELP Help Compiler attempts to compile the
ERR
| source files of a Help system
ERX
ERWin file ?????
ESPF
Encapsulated PostScript Files
ESPS
ESPS audio files (binary)
EUI
Ensoniq ESP family compacted disk image
EVY
Envoy document
EWL
M$ Encarta document
EXC
M$ Word Exclusion Dictionary
EXD
????? (binary)
EXE
Executable file (program) (binary)
EXP
Embroidery machines graphics file - Melco Expanded (binary)
EYB
Encarta Encyclopedia Yearbook File
F
F
FORTRAN file
F2R
Farandoyle linear module format
F3R
Farandoyle blocked linear module format
F77
FORTRAN 77 file
F90
FORTRAN 90 file
FAR
Farandole Composer music module file
FAV
M$ Outlook navigation bar
FAX
FAX Type image
FBK
Navison Financials Backup
FCD
Virtual CDROM
FDB
Navison Financials Database
FDF
Adobe Acrobat Forms Document file
FEM
CADRE Finite Element Mesh file
FFA
MS fast find file
FFF
GUS PnP bank file format
FFL
MS fast find file
FFO
MS fast find file
FFT
Final Form Text (part of IBM's DCA) (ASCII)
FFX
MS fast find file
FH3
Aldus Freehand 3 drawing
FIF
Fractal image file
FIG
A file format used by REND386/AVRIL
FIL
ASCII text file (tgs) (ASCII)
FITS
|CCD camera image
FITS
|Flexible Image Transport System
FLA
Macromidia Flash movie
FLC
AutoDesk FLIC animation
FLF
|Corel Paradox Delived form ?????
FLF
|Navison Financials License file
FLI
AutoDesk FLIC animation
FLT
Corel filter
FLT
Parson's Announcements file (binary)
FLF
An OS/2 driver file
FLT
|StarTrekker music module (MOD) file
FLT
|A file format use in MulitGen Inc.'s Open Flight
FM
Adobe FrameMaker Document
FMB
Oracle binary source code for form, version 4.0 and later
FML
File Mirror List (GetRight)
FMS
FractMus document (Fractal Music)
FMT
|Oracle text format of form, version 4.0 and later
FMT
|M$ Schedule+ print file
FMX
Oracle executable form, version 4.0 and later
FND
M$ Explorer Saved Search file (Find applet)
FNG
Font group file (Font Navigator)
FNK
FunkTracker module format
FNT
Bitmap font file (binary)
FOG
Fontographer font
FON
System font (Bitmap font file) (binary)
FOR
FORTRAN file
FOT
Font-related file
FP
FileMaker Pro file
FP1
Flying Pigs for Windows data file
FP3
FileMaker Pro file
FPT
FileMaker Pro file
FPT
M$ FoxPro memo fields
FPX
|FlashPix Image File bitmap (binary)
FPX
|M$ Picture It! Image file
FRM
|Form template (ASCII)
FRM
|FrameMaker or FrameBuilder document
FRM
|Oracle executable form version 3.0 and earlier
FRM
|Visual Basic form
FRM
|WordPerfect Merge form
FRM
|Datacad Symbol Report file
FRX
|Visual Basic form stash file
FRX
|M$ FoxPro report file
FRT
M$ FoxPro report file
FSF
fPrint Audit Tool file format
FSL
Borderland's Paradox 7 forms ?????
FSL
Corel Paradox Saved form
FSM
Farandoyle Sample format ?????
FT
| Lotus Notes Full Text index
FT
| Full-text Search Group file resulting from using
FT
| Find in the Windows Help system. Can be erased; regenerates
FTG
| Full-text Search Group file resulting from using
FTG
| Find in the Windows Help system. Can be erased; regenerates
FTS
| Full-Text Search index file resulting from using
FTS
| Find in the Windows help system
FW2
Framework II
FW3
Framework III file
FW4
Framework IV file
FXP
M$ FoxPro compiled source file
FZB
Casio FZ-1 Bank dump
FZF
Casio FZ-1 Full dump
FZV
Casio FZ-1 Voice dump
G
G721
Raw CCITT G.721 $bit ADPCM format data
G723
Raw CCITT G.723 3 or 5bit ADPCM format data
GAL
Corel Multimedia Manager album
GCD
|Generic (TM) CADD drawing (later versions)
GCD
|Global CD, file containing every single byte from a CD
GCP
| Ground Control Point file used in image processing of remote
GCP
| sensing data often to form map projections. CHIPS (CopenHagen
GCP
| Image Processing System) uses these files.
GDB
|InterBase database file
GDB
|Parson's Announcements file (binary)
GDM
Bells, whistles, and sound boards module format
GED
| GEDCOM genealogical data file, a popular format for
GED
| recording and exchanging genealogical data (ASCII)
GED
|Graphic Environment Document (drawing)
GEM
Ventura/GEM metafile (graphics file) (binary)
GEN
Ventura-Generated text file (ASCII)
GetRight GetRight Unfinished-Download file
GFC
GFI
Patton&Patton Flowcharting 4 flowchart file
Genigraphics Graphics Link presentation (binary)
GFX
Genigraphics Graphics Link presentation (binary)
GID
Windows 95 global index file (containing help status)
GIF
CompuServe Graphics Interchange bitmap (binary)
GIM
Genigraphics Graphics Link presentation (binary)
GIX
Genigraphics Graphics Link presentation (binary)
GKH
Ensoniq EPS family disk image file
GKS
Gravis GripKey document
GL
An animation format
GNA
Genigraphics Graphics Link presentation (binary)
GNT
| Generated Code, an executable code in a
GNT
| Micro Focus proprietary format
GNX
Genigraphics Graphics Link presentation (binary)
GRA
M$ Graph 97 chart
GRD
| Grid file, used in image processing of remote sensing
GRD
| data often to form map projections. CHIPS (CopenHagen
GRD
| Image Processing System) uses these files
GRF
Grapher (Golden Software) graph file
GRP
Program Manager Group
GSM
|Raw GSM 6.10 audio stream
GSM
|Raw 'byte aligned' GSM 6.10 audio stream
GSM
|US Robotics voice modems GSM w.o. header/VoiceGuide/RapidComm
GSM
|US Robotics voice modems GSM w. header/QuickLink
GTK
Graoumftracker (old) music module (MOD) file
GT2
Graoumftracker (new) music module (MOD) file
GWD
Parson's Announcements file (ASCII_)
GWP
Greetings Workshop Project file
GWX
Genigraphics Graphics Link presentation (binary)
GWZ
Genigraphics Graphics Link presentation (binary)
GZ
(UNIX) Gzip compressed file (binary)
H
H
C program header
HCOM
Sound Tools HCOM format
HDF
A file in Hierarchical Data Format
HED
HighEdit document
HEL
M$ Hellbender saved game
HEX
Macintosh BinHex 2.0 file
HGL
HP Graphics Language drawing (binary)
HH
| Map file. Contains topic IDs and map numbers for each
HH
| of the topics in a Help system. Allows the running
HH
| application to send the user the appropriate
HH
| context-sensitive help topic
HLP
|Help file
HLP
|DataCAD Windows Help file
HOG
Lucas Arts Dark Forces WAD file
HPJ
Visual Basic Help Project
HPP
C++ program header
HQX
Macintosh BinHex 4.0 file (compressed) (binary)
HST
History file
HT
HyperTerminal datafile (binary)
HTM
Hypertext document (ASCII)
HTML
Hypertext document (ASCII)
HTT
M$ Hypertext Template (ASCII)
HTX
Extended HTML template (ASCII)
HUS
Embroidery machines graphics file - Viking (binary)
HXM
Descent2 HAM file extension
I
IBM
Data files for "Grandma and Me"
ICA
Citrix WinFrame file
ICB
Targa bitmap (binary)
ICC
Kodak printer format
ICL
Icon Library file (industry standard)
ICM
Image Color Matching profile file
ICO
Windows Icon
IDB
MSDev 'intermediate' file
IDD
MIDI Instrument Definition
IDE
UNKNOWN (help appreciated)
IDF
MIDI Instrument Definition (Win95 required file)
IDQ
Internet Data Query file
IDX
|M$ FoxPro relational database index file
IDX
|Symantec Q&A relational database index file
IDX
|M$ Outlook Express file
IFF
Interchange Format Files, Amiga ILBM (graphics) (binary)
IGES
IGF
Initial Graphics Exchange Specification file (binary)
Inset Systems metafile
IIF
QuickBooks for Windows interchange file
IL
Icon library file
ILBM
A bitmap (graphic image) file (binary)
IMA
WinImage file (binary)
IMG
GEM Paint image file (binary)
IN
Copy of IN.MBX (Eudora inbound mail box)
INC
Assembler language or Active Server include file
INF
Information file (ASCII) ?????
INI
Initialization file (ASCII)
INI
MWave DSP synth's mwsynth.ini GM-setup
INI
Gravis UltraSound bank setup
INP
INRS
Oracle source code for form, version 3.0 and earlier
INRS-Telecommunications audio
INS
InstallShield install script (ASCII)
INS
Internet Communications setting
INS
X-Internet sign-up file
INS
Ensoniq EPS family instrument
INS
Sample Cell/II MAC/PC instruments
INT
| Intermediate Code, an executable code produced when
INT
| a source program is syntax-checked
IOF
Findit document
IPG
UNKNOWN (help appreciated)
IQY
M$ Internet Inquiry file
ISO
| Lists the files on a CD-ROM; based on the ISO 9660
ISO
| CD-ROM file system standard
ISP
Internet Communication setting
ISP
X-Internet sign-up file
IST
Digitaltracker instrument file
ISU
InstallShield uninstall script (ASCII)
IT
Impulse Tracker music module file (binary)
ITI
Impulse Tracker instrument
ITS
Impulse Tracker sample
ITS
Internet document set (possibly a M$ file)
IV
A file format use in Open Inventor
IW
Idlewild screensaver
J
J62
Ricoh camera format
JAR
| Java ARchive file (a compressed file for applets
JAR
| and related files-PKZipped) (binary)
JAVA
JBF
Java source code
Paint Shop Pro image browser file (can delete, is rebuilt)
JFF
JIF
JPEG file (graphics file) (binary)
JPEG-JFIF Compliant image file (binary)
JFIF
JPEG file (graphics file) (binary)
JMP
SAS JMPDiscovery chart-to-statistics file
JN1
Epic MegaGames Jill of the Jungle data file
JPE
JPEG-JFIF Compliant bitmap (binary)
JPEG
JPG
JS
JPEG-JFIF Compliant bitmap (binary)
JPEG-JFIF Compliant bitmap (binary)
JavaScript source code (ASCII)
JSP
A HTML page containing a reference to a Java servlet (ASCII)
JTF
JPEG bitmap (binary)
JTN
Graphics file (JFIF?)
K
K25
Kurzweil 2500 sample
KAR
Karaoke MIDI file (text+MIDI)
KDC
Kodak Photo-Enhancer image file (binary)
KBS
UNKNOWN (help appreciated)
KEY
DataCAD Icon toolbar file
KFX
KoFax Group 4 image (binary)
KIZ
Kodak digital postcard files
KKW
| Contains all K-keywords in the RoboHELP Help project
KKW
| Index Designer not associated with topics
KMP
Korg Trinity KeyMaP file
KQP
Konica camera native files (binary)
KR1
Kurzweil 2000 sample (multi-floppy)
KRZ
Kurzweil 2000 sample
KSF
Korg Trinity Sample File
KSM
Embroidery machines graphics file - Old (binary)
KYE
Kye game data
L
L
LA
Lex source
Audio file
LBM
Deluxe Paint bitmap (graphics) (binary)
LBT
M$ FoxPro labels
LBX
M$ FoxPro labels
LCF
Folio License Collection file
LCS
Folio License Update Script
LDB
M$ Access lock file
LDL
Corel Paradox Delivered library
LEG
Legacy document
LES
Logitech Entertainment system game profiles (same as REG file)
LFT
3D Studio (DOS) loft file
LHA
Alternate file suffix for LZH
LIB
Library
LIC
ASCII license information file (tgs)
LIN
DataCAD Line type file
LIS
Output file produced by a Structured Query Reporting (SQR) program
LIV
Symantec Liveupdate files, assorted types, ASCII/Binary
LLX
Laplink Exchange Agent
LMA
Audio file
LNK
Windows shortcut file
LOG
Log file (ASCII)
LPD
|Helix Nuts and Bolts file
LPD
|Avery LabelPro Design File
LQT
Liquid Audio File (binary)
LRC
Intel Video Phone file
LSL
Corel Paradox Saved library
LSP
AutoLISP, CommonLISP, and other LISP language files
LST
List file (ASCII)
LU
ThoughtWing Library Unit file
LVL
Parallax Software's Miner Descent/D2 Level Extension
LWLO
Lightwave Layered Object file
LWOB
Lightwave Object file
LWP
LWSC
Lotus Wordpro 96/97 file
Lightwave Scene file
LYR
DataCAD Layer file
LZH
LH ARC compressed archive (binary)
LZS
Skyroads data file
M
M1V
MPEG-related file (MIME type 'mpeg')
M3D
Corel Motion 3D animation (binary)
M3U
MPEG URL (MIME audio file) audio/x-mpegurl
M3U
Playlist file (audio) (binary)
MAT
Matlab variables file (binary)
MAC
MacPaint image file (binary)
MAD
M$ Access module
MAF
M$ Access Form
MAG
Image file (binary) (Japanese?)
MAGIC
Magic Mail Monitor configuration file
MAK
Visual Basic or MS Visual C++ Project
MAM
M$ Access Macro
MAN
(UNIX) Manual page output
MAP
Map file
MAP
Duke Nukem 3D WAD game file (binary)
MAQ
M$ Access Query
MAR
M$ Access Report
MAS
|Master Dictionary file PCWrite
MAS
|Lotus Freelance Graphics Smartmaster file (binary)
MAT
M$ Access Table
MAUD
MAUD sample format
MAX
| A file format which represents a scene in
MAX
| KINETIX's 3D Studio MAX
MAX
|Paperport file
MAX
|OrCAD layout file
MAZ
|Hover maze data
MAZ
|A file format use by Division's dVS/dVISE
MB1
Apogee Monster Bash data file
MBOX
Berkeley (UNIX) mailbox format
MBX
|Extension M$ Outlook adds to saved email
MBX
|Eudora mailboxes (ASCII)
MCC
|Dialer10 calling card
MCC
|Monu-Cad Pro CAD file
MCD
Monu-Cad Pro CAD file
MCR
DataCAD Keyboard macro file
MCW
M$ Word for Macintosh document
MDA
|M$ Access add-in
MDA
|M$ Access workgroup for version 2
MDB
M$ Access database
MDE
M$ Access MDE file ?????
MDL
|Digital Tracker music module (MOD) file
MDL
|Quake model file
MDN
M$ Access blank database template
MDP
UNKNOWN (help appreciated)
MDW
M$ Access Workgroup
MDZ
M$ Access wizard template
MED
Music Editor, OctaMED music module (MOD) file
MER
| Format for interchanging spreadsheet/database
MER
| data; recognized by Filemaker, Excel, and others
MES
aab Music Files
MET
Presentation Manager metafile
MGF
A file in a Materials and Geometry Format
MHTM
MHTML document (MIME)
MHTML
MHTML document (MIME)
MI
Miscellaneous ?????
MIC
M$ Image Composer file
MID
MIDI music (binary)
MIDI
MIDI music (binary)
MIF
Adobe FrameMaker Interchange Format
MIFF
|Machine Independent Format File. A multipart file
MIFF
| in the Multi-Purpose Internet Mail Extensions (MIME)
MIFF
| format; often created as the result of sending e-mail
MIFF
| with attachments in AOL.
MIM
|The files in a multipart MIM file can be "opened"
MIM
| unarchived and separated into individual files
MIM
| using Winzip or a similar program. (binary)
MIME
See MIM
MIX
M$ Picture It! image file (binary)
MLI
A file in 3D Studio's Material-Library format.
MLI
Encarta Encyclopedia Media List
MME
| A multipart file in the Multi-Purpose Internet Mail Extensions
MME
| (MIME) format; often created as the result of sending e-mail with
MME
| attachments in AOL. The files in a multipart MME file can be
MME
| "opened" (unarchived and separated into individual files) using
MME
| Winzip or a similar program. (binary)
MMF
Meal Master Format, a recipe cataloging format
MMF
M$ Mail File
MMM
M$ Multimedia Movie
MMP
Mindmapor MindManager file (binary)
MMO
Audioactive file (audio/x-mpg)
MN2
Descent2 Mission File
MND
?????
MNI
Mandelbrot for Windows
MNG
Multi-image Network Graphics (binary)
MNT
M$ FoxPro menus
MNX
M$ FoxPro menus
MOD
FastTracker, StarTrekker, Noise Tracker music module file
MOD
Protracker music module file
MOD
M$ Multiplan spreadsheet
MOD
Amiga/PC tracker module
MOD
generic text/program module file (tgs) (ASCII)
MOD
Eudora 3.0.6 script file
MOV
QuickTime for Windows movie
MP1
MPEG Audio Layer 1
MP2
MPEG Audio Layer 2
MP3
MPEG Audio Layer 3 (AC3)
MPA
MPEG-related file (MIME type 'mpeg')
MPE
MPEG animation file
MPEG
MPEG animation file
MPG
MPEG animation file
MPP
M$ Project file
MPP
CAD drawing file format
MPR
M$ FoxPro menus (compiled)
MP2
MPEG Audio Layer 2 file (MIME video file)
MP3
MPEG Audio Layer 3 (AC3) file
MRI
MRI Scan (Magnetic Resonance Imaging)
MSA
Magic Shadow Archive (binary)
MSDL
Manchesters Scene Description Language
MSG
M$ Mail message or message file of some kind
MSN
M$ Network document
MSN
Descent Mission File
MSP
M$ Paint bitmap (binary)
MTM
MultiTracker music module file (binary)
MUL
Online game called Ultima online
MUS
Music (ASCII) ?????
MUS10
Mus10 audio
MUZ
Similar to .WAV file, eg, sound file (binary)
MVB
M$ Multimedia Viewer file
MWP
Lotus Wordpro 97 Smartmaster file
N
NAN
Nanoscope files (Raw Grayscale)
NAP
NAP Metafile Vector image ?????
netCDF network Common Data Form
NCB
M$ Developer Studio file
NCD
Norton Change Directory
NCF
Netware Command File
NCF
Lotus Notes internal clipboard
NDO
3D low-polygon modeler, Nendo
NDX
ASCII index file (tgs)
NET
Network
NFF
Neutral File Format
NFL
Folio Infobase link
NFO
Folio Infobase
NFO
ASCII information file (tgs)
NIL
Norton Icon Library file (EasyIcons-compatible)
NIST
NIST Sphere audio
NLB
Oracle 7 data
NLM
Netware Loadable Module
NLU
Norton Live Update E-Mail Trigger file
NSF
Lotus Notes database
NS2
Lotus Notes database (version 2)
NST
Noise Tracker music module (MOD) file
NTF
Lotus Notes database template
NWC
Noteworthy Composer song file
NWS
M$ OutlookExpress news message (MIME RFC822)
O
O01
Typhoon voice file
OBD
M$ Office binder template
OBD
M$ Office Binder
OBJ
Object file
OBZ
M$ Office Binder Wizard
OCX
M$ Object Linking and Embedding custom control
ODL
UNKNOWN (from Autospell list)
ODS
M$ Outlook Express mailbox file (?)
OFF
3D mesh Object File Format
OFN
M$ Office FileNew file
OFT
M$ Outlook template
OKT
Oktalyzer music module (MOD) file
OLB
OLE Object Library
OLE
OLE object
OOGL
Object Oriented Graphics Library (binary)
OPL
Organizer Programming Language source file - Psion/Symbian
OPO
OPL output executable file
OPT
M$ Developer Studio file
OPX
OPL extension DLL
ORC
Oracle 7 script (ASCII)
ORG
Lotus Organizer file
OR2
Lotus Organizer 2 file
OR3
Lotus Organizer 97 file
ORA
Oracle 7 configuration
OSS
M$ Office Search file
OST
M$ Exchange/Outlook Offline file
OTL
Super NoteTab template file (Fookes)
OVL
Program overlay (binary)
P
P10
Tektronix Plot 10 drawing
P65
Pagemaker 6.5 file
P7C
Digital ID file (MIME)
PAB
M$ Personal Address Book
PAC
SB Studio II package
PAD
Portable Application Description (ASCII) fm ACDSee
PAK
Quake WAD file (binary)
PAL
A compressed file (binary)
PAS
Pascal source code (Borland) (ASCII)
PAT
|DataCAD Hatch pattern file
PAT
|Corel Draw pattern
PAT
Advanced Gravis Ultrasound/Forte tech. Patch
PBD
PowerBuilder Dynamic library, an alternative to a native DLL
PBF
Turtle Beach Pinnacle Bank File
PBK
M$ Phonebook
PBL
| PowerBuilder Library used in the PowerBuilder
PBL
| development environment
PBM
Portable bitmap image file (binary)
PBR
PowerBuilder Resource
PCD
| Kodak Photo-CD image P-Code compiled test scripts as in
PCD
| M$ Tst and M$ Visual Test
PCE
Maps Eudora mailbox names to DOS filenames
PCE
Eudora signature file (ASCII)
PCH
UNKNOWN (help appreciated)
PCL
| Hewlett-Packard Printer Control Language file
PCL
| (printer-ready bitmap) (binary)
PCM
Audio file format
PCM
OKI MSM6376 synth chip PCM format
PCP
Symantec Live Update Pro file
PCS
|PICS animation
PCS
|Embroidery machines graphics file - Pfaff (binary)
PCT
Macintosh PICT file (graphics) (binary)
PCX
ZSoft Paintbrush bitmap (binary)
PDB
UNKNOWN (from Autospell)
PDD
Graphics format file
PDF
Adobe Acrobat Portable Document Format
PDF
Netware Printer Definition File
PDB
3Com Palmpilot database file
PDF
Package Definition File from M$ Systems Management Server
PDQ
Patton&Patton Flowcharting PDQ Lite file
PDS
Graphics file
PEC
Embroidery machines graphics file - Brother (binary)
PES
Embroidery machines graphics file - Brother Ver 2 (binary)
PF
Aladdin Systems Private Files encrypted file
PFA
Type 1 font (ASCII)
PFB
Type 1 font (binary)
PFC
PF Component
PFM
Printer Font Metrics
PGL
HP Plotter drawing
PGM
Portable Greymap Image file (bitmap) (binary)
PGP
PGP encrypted file
PH
Temporary file generated by M$ Help Compiler
PHP
HTML Script
PHTML
Perl-parsed HTML
PIC
|PC Paint bitmap Image File (binary)
PIC
|Lotus picture file (binary)
PIC
|Macintosh PICT drawing (binary)
PICT
Macintosh PICT image file (binary)
PIF
Program Information File (Binary/ASCII)
PIF
IBM PIF drawing (binary)
PIG
Lucas Arts Dark Forces WAD file (binary)
PIN
Epic Pinball data file
PIX
Inset Systems bitmap (binary)
PJ
MKS Source Integrity file
PJX
M$'s Visual Foxpro Project
PJT
M$'s Visual Foxpro Project
PKG
| M$ Developer Studio application extension
PKG
| (similar to a DLL file) (binary)
PKR
PGP Public Keyring
PL
Perl program
PLA
Hypertext script file (PERL?) (ASCII)
PLG
A file format used by REND386/AVRIL
PLI
Oracle 7 data description
PLM
DisorderTracker2 module
PLS
DisorderTracker2 sample; Playlist file (binary)
PLS
MPEG PlayList file (used by WinAmp)
PLS
MP3 File
PLT
HPGL Plotter drawing (binary)
PLT
AutoCAD Plot drawing (binary)
PLT
Gerber sign-making software
PM5
Pagemaker 5.0 file
PM6
Pagemaker 6.0 file
PNET
Network Project
PNG
|Portable Network Graphics bitmap (binary)
PNG
|Paint Shop Pro Browser catalogue
PNM
Image file (binary)
PNT
MacPaint graphic file (binary)
PNTG
Same as PNT file
POG
Descent2 PIG file extension
POS
Poster Image file (Parsons Announcements)
POT
M$ PowerPoint Template
POV
Persistence of Vision ray-tracer
PP4
Picture Publisher 4 bitmap (binary)
PPA
M$ PowerPoint Add-in
PPF
Turtle Beach Pinnacle Program File
PPM
Portable Pixelmap bitmap image file (binary)
PPP
Parson Power Publisher
PPP
Serif PagePlus desktop publishing default output
PPS
|M$ PowerPoint slide show
PPS
|Paint Shop Pro image
PPT
M$ PowerPoint presentation
PRC
3Com Palmpilot resource (text or program) file
PRE
Lotus Freelance presentation
PRF
|Windows system file
PRF
|Macromedia Director settings file
PRG
dBase, Clipper, and FoxPro program source files
PRG
WAVmaker program
PRJ
Project File (3d Studio - DOS)
PRN
|Print Table (space delimited text) (ASCII)
PRN
|DataCAD Windows Printer file
PRO
Properties file (Netscape); Profile (????) (ASCII/binary)
PRS
Harvard Graphics for Windows presentation (binary)
PRT
A print-formatted file
PRV
A PsiMail Internet provider template file
PRZ
Lotus Freelance Graphics 97 file (binary)
PS
|Encapsulated PostScript image file (binary)
PS
|Postscript printer-ready file
PSB
Pinnacle Sound Bank
PSD
Adobe Photoshop bitmap image file (binary)
PSI
PSION a-law audio ????? (binary)
PSM
|Protracker Studio Module format
PSM
|Sound data for Epic's games
PSP
Photo Shop Pro Raster Image (graphics) (binary)
PST
M$ Outlook Personal Folder File
PTM
Polytracker music module (MOD) file
PUB
Ventura Publisher publication
PUB
M$ Publisher document
PWD
M$ Pocket Word document
PWL
Windows 95 password list file
PWP
Photoworks image file [film roll]
PWZ
M$ PowerPoint Wizard
PXL
M$ Pocket Excel spreadsheet
PY
|Save emessages from Yahoo
PY
|Python source code
PYC
Python byte code file
Q
QAD
PF QuickArt Document
QBW
QuickBooks for Windows file
QCP
Qualcomm PureVoice file (binary)
QDT
| Quick Books data file from the Quicken UK
QDT
| Accountancy/Tax/Invoice eprogram
QD3D
Apple's QuickDraw 3D Metafile format
QFL
FAMILY LAWYER document
QIC
M$ Backup file
QIF
QuickTime-related image (MIME)
QIF
Quicken Import File
QIZ
Question text file (ASCII) (tgs)
QLB
Quick Library
QM
Quality Motion file
QOT
Quotes text file (ASCII) (tgs)
QRY
M$ Query
QST
Quake Spy Tab file
QT
QTD
QTI
QuickTime Movie (binary)
Parson's Announcements file (binary)
QuickTime-related image (binary)
QTIF
QuickTime-related image (binary)
QTM
QuickTime Movie (binary)
QTP
QuickTime Preferences file
QTS
Mac PICT image file (binary)
QTS
QuickTime-related image (binary)
QTX
QuickTime-related image (binary)
QW
Symantec Q&A Write program file
QXD
Quark XPress file
R
R
RA
Pegasus Mail resource file
RealAudio sound file (binary)
RAM
RealAudio metafile
RAR
RAR compressed archive (Eugene Roshall's format) (binary)
RAS
Sun Raster Image File format (binary)
RAW
|Raw File Format (bitmap) (binary)
RAW
|Template file for MemoryMate (binary)
RAW
|Raw signed PCM data
RBH
|Maintained by RoboHELP, the RBH file adds to
RBH
| the information contained in the Help project file
RC
Resource Compiler script file (BORLAND C++ / MS C++)
RCT
UNKNOWN (help appreciated)
RDF
Resource Description Framework file (related to XML and metadata)
RDL
Descent Registered Level
REC
Recorder macro
REC
RapidComm voice file (binary)
REG
Registration/Registry file ?????
RES
M$ Visual C++ Resource
RFT
| Revisable Form Text (part of IBM's DCA or
RFT
| Document Content Architecture)
RGB
Silicon Graphics RGB files ???? (binary)
RIF
Metacreations Painter format
RLE
Windows/Compuserve Run-Length Encoded bitmap (binary)
RL2
Descent2 Registered Level
RM
RealAudio video file (binary)
RMD
M$ RegMaid document
RME
ASCII Readme file (tgs)
RMF
Rich Map Format (used by 3-D game editors to store a map)
RMI
MIDI music sequence (binary)
RMJ
RealJukebox file (binary)
RMX
RealJukebox file (binary)
ROV
Rescue Rover data file
RPM
RedHat Package Manager package (for Linux)
RPT
M$ Visual Basic Crystal Reports file
RRS
save file for the ace game Road Rash
RSL
Borderland's Paradox 7 reports
RTF
Rich Text Format document
RTM
Real Tracker music module (MOD) file
RTK
Used by RoboHELP to simulate the search feature of Windows help
RTS
|RealAudio's RTSL document
RTS
|RoboHELP to speed complex operations
RTS
|Remode Ridicule Sound File (Apogee)
RUL
Extension used in InstallShield
RVP
M$ Scan Configuration file (MIME)
RXX
| RAR compressed files from a multi-volume archive
RXX
| (XX = a number from 01 to 99) (binary)
S
S
Assembler source code
S3I
Scream Tracker v3 instrument
S3M
Sound module file for ScreamTracker v3
SAM
|Ami Professional document
SAM
|Signed 8bit sample data
SAS
UNKNOWN (help appreciated)
SAV
Saved game file
SB
Raw Signed Byte (8bit) data
SBK
| Creative Labs Soundfont 1.0 Bank file
SBK
| (Soundblaster)/EMU SoundFont v1.x Bank files
SBL
Shockwave Flash object
SBR
UNKNOWN (help appreciated)
SC2
|M$ Schedule+ 7 file format
SC2
|SAS catalog (Windows 95/NT, OS/2, Mac)
SCC
M$ Source Safe file
SCD
|Matrix/Imapro SCODL slide image
SCD
|M$ Schedule+ 7
SCF
Windows Explorer command file
SCH
SCI
M$ Schedule+ 1
ScanVec Inspire Native file format
SCN
trueSpace2 scene
SCP
Dial-Up Networking Script (ASCII)
SCR
|Windows screensaver (binary) (Executable!)
SCR
|Fax image (binary)
SCT
|SAS catalog (DOS) ?????
SCT
|SciTex Continuous Tone bitmap (binary)
SCT
|M$ FoxPro forms
SCT01
SAS catalog ((UNIX)) ?????
SCV
ScanVec CASmate Native file format
SCX
M$ FoxPro forms
SD
Sound Designer I audio (binary)
SD2
|Sound Designer 2 flattened file/data fork
SD2
|SAS database (Windows 95/NT OS/2, Mac)
SDF
System Data File Format - legacy Unisys (Sperry) format
SDK
Roland S-series floppy disk image
SDL
SmartDraw library (binary)
SDR
SmartDraw drawing (binary)
SDS
Raw Midi Sample Dump Standard file
SDT
SmartDraw template
SDV
Semicolon Divided Values file
SDW
|Lotus WordPro graphic file (binary)
SDW
|Raw Signed DWord (32bit) data
SDW
|Folio Shadow file
SDX
Midi Sample Dump Standard files compacted by SDX
SEA
| Self-expanding archive (used by Stuffit for Mac
SEA
| files and possibly by others) (binary)
SEP
Tagged Image File Format (TIFF) bitmap (binary)
SES
Cood Edit Session file (common digital audio editor file )
SET
File set for M$ backup
SEW
Embroidery machines graphics file - Janome (binary)
SF
IRCAM SoundFile format
SF2
Emu SoundFont v2.0 file (binary)
SFD
SoundStage Sound File Data (binary)
SFI
SoundStage Sound File Info (binary)
SFL
Soft fonts file (binary)
SFP
Soft fonts file (binary)
SFR
Sonic Foundry Sample Resource
SFW
Seattle Film Works (Mangled JPEG) (binary)
SFX
RAR self-extracting archive (binary)
SF2
Creative Labs Soundfont 2.0 Bank file (Soundblaster)
SGML
Standard Generalized Markup Language (ASCII)
SHB
Corel Show presentation
SHB
Document shortcut file
SHG
Hotspot bitmap (binary)
SHP
3D Studio (DOS) shapes file (binary)
SHP
| File format used by some programs for 3D
SHP
| modeling of multipart interactive triangle models
SHS
Shell scrap file
SHW
Corel Show presentation
SIG
Signature file
SHTML
HTML file containing Server Side Includes (SSI)
SIT
Stuffit archive of Mac files (binary)
SIZ
Oracle 7 configuration
SKA
PGP secret Keyring
SKD
Autosketch Drawing Base (binary)
SKL
Macromedia Director resource file
SL
PACT's Save Layout extension
SLB
AutoDesk Slide Library File Format
SLD
AutoDesk Slide File Format
SLK
Symbolic Link (SYLK) spreadsheet
SM3
DataCAD Symbol file
SMP
Samplevision format
SMP
Ad Lib Gold Sample
SND
|NeXT sound
SND
|Mac Sound Resource
SND
|Raw unsigned PCM data ?????
SND
|AKAI MPC-series sample
SNDR
Sounder sound file
SNDT
Sndtool sound file
SNP
Snapshot file of M$ Access 97 report
SOU
SB Studio II sound
SPD
Speach Data file
SPL
|Shockwave Flash Object
SPL
|Digitracker Sample
SPP
UNKNOWN (from Autospell)
SPPACK SPPack sound sample
SPRITE Acorn's bitmap format (binary)
SQC
Structured Query Language (SQR) common code file
SQL
|Informix SQL queries
SQL
| Generally used by database products as an extension
SQL
| for SQL queries (scripts, text, or binary)
SQR
Structured Query Language program file
SRT
alpha sorted text file (tgs) (ASCII)
SSD01
SSD
SAS data sets ((UNIX))
SAS database (DOS)
SSI
Server Side Include ?????
STF
Unknown (ASCII) ?????
STM
| Shorter suffix for .shtml, an HTML file containing
STM
| a Server Side Include (SSI)
STM
|Scream Tracker v2 music module file
ST
Atari ST disk image
STR
Screensaver extension (binary) ?????
STY
Ventura Publisher style sheet
SVX
Amiga 8SVX sound
SVX
Interchange file format, 8SVX/16SV
SW
Raw signed Word (16bit) data
SWA
Shockwave audio file in Macromedia Director (an MP3 file)
SWF
Shockwave Flash object file
SWP
DataCAD Swap file
SYS
System file
SYW
Yamaha SY-series wave files ?????
T
TAB
Guitar Tablature file
TAR
Tape Archive (compressed)(binary)
TAZ
UNIX - Gzip/Tape Archive (compressed)(binary)
TBK
Asymetrix Toolbook interactive multimedia files
TCL
Script in the TCL/TK Language ?????
TDB
Thumbs Plus database
TDDD
A file format use by the Imagine & Turbo Silver ray-tracers
TEX
Texture file
TGA
Targa bitmap (binary)
TGS
Personal file, eg, Tom Stewart's File (ASCII) (tgs)
TGZ
UNIX - Gzip/Tape Archive (compressed)(binary)
THEME
THN
Windows 95 Desktop Theme
Graphics Workshop for Windows thumbnail (binary)
TIB
UNKNOWN (from Autospell)
TIF
Tagged Image File Format bitmap (binary)
TIFF
Tagged Image File Format bitmap (binary)
TIG
Tiger file, used by US government to distribute maps
TLB
OLE Type Library
TLE
Two-Line Element set (NASA)
TMP
Windows temporary file
TOC
Table of contents of Eudora mailboxes
TOL
Kodak photoenhancer
TOS
The Operating System for Atari 16/32 and 32/32 computers
TPL
CakeWalk Audio Template file
TPL
DataCAD Template file
TPP
Teleport Pro Project
TRK
Kermit script file
TRM
Terminal file
TRN
MKS Source Integrity project usage log
TSK
UNKNOWN (from Autospell)
TTF
TrueType font (binary)
TTK
Corel Catalyst Translation Tool Kit
TWF
TabWorks file
TWW
Tagwrite Template
TX8
MS-DOS text (ASCII)
TXB
Descent/D2 Encoded Briefing File
TXT
|ASCII text-formatted audio data ?????
TXT
|In most cases, an ASCII text file (ASCII)
TXW
TZ
Yamaha TX16W wave files ?????
Old compression format file (binary)
TZD
Time Zone Data (ASCII) (Netscape)
T2T
Sonata CAD modeling software file
U
UB
Raw unsigned byte (8-bit) data
UDF
Windows NT Uniqueness Database File
UDW
Raw unsigned doubleword (32-bit) data
ULAW
US telephony format (CCITT G.711) audio
ULT
Ultratracker music module (MOD) file
UNI
MikMod UniMod formatted file
URL
Internet shortcut file
USE
MKS Source Integrity file
UU
UU-encoded file
UUE
UU-encoded file
UW
Raw unsigned word (16-bit) data
UWF
UltraTracker Wave file
V
V8
Covox 8-bit audio file
VAP
Annotated speech
VBA
VBase file
VBP
Visual Basic Project
VBS
Visual Basic Script (Executable?)
VBW
M$ Visual Basic workspace
VBX
Visual Basic custom control
VCE
| Natural MicroSystems (NMS) unformatted voice file
VCE
| (used by Cool Edit)
VCF
Virtual card file (Netscape)
VCF
| Vevi configuration file; defines objects for use
VCF
| with Sense8's WorldToolKit
VCT
M$ FoxPro class library
VCX
M$ FoxPro class library
VDA
Targa bitmap (binary)
VI
| Virtual Instrument file from National Instruments
VI
| LABView product
VIFF
Khoros Visualization format
VIR
| File identified as a virus-infected file by
VIR
| Norton AntiVirus and possibly others
VIV
VivoActive Player streaming video file
VIZ
Division's dVS/dVISE file
VLB
Corel Ventura Library
VMF
FaxWorks audio file
VOC
Creative Labs, Sound Blaster audio file
VOX
Dialogic audio file coded using ADPCM
VOX
Natural MicroSystems (NMS) formatted voice file
VOX
Talking Technology audio file
VP
Ventura Publisher publication
VQE
Yamaha Sound-VQ Locator file
VQF
Yamaha Sound-VQ file (possible emerging standard)
VQL
Yamaha Sound-VQ Locator file
VRF
Oracle 7 configuration
VRML
A Virtual Reality Modeling Language file
VSD
Visio drawing (flow chart or schematic)
VSL
Download List file (GetRight)
VSS
Visio Stencil file
VST
Targa bitmap (binary)
VSW
Visio Workspace file
VTC
DICTIONARY file for AUTOSPELL
VTD
DICTIONARY file for AUTOSPELL
VXD
M$ Windows virtual device driver
W
WAB
M$ Outlook Address Book file
WAD
| Large binary file for Doom game containing
WAD
| video, player level, and other information
WAV
Windows Waveform sound
WB1
QuattroPro for Windows spreadsheet
WB2
QuattroPro for Windows spreadsheet
WBK
M$ Word Backup Document
WBL
Argo WebLoad II upload file
WBR
Crick Software WordBar File
WBT
Crick Software Wordbar Template
WCM
WordPerfect Macro
WCM
M$ Works 4.0 Communication file
WDB
M$ Works 4.0 database
WEB
CorelXara Web document
WF
Weaver file (HTML)
WFB
Turtle Beach WaveFront Bank (Maui/Rio/Monterey)
WFD
Turtle Beach WaveFront Drum set (Maui/Rio/Monterey)
WFN
symbols for use in Corel Draw
WFP
Turtle Beach WaveFront Program (Maui/Rio/Monterey)
WGP
Wild Board Games data file
WGT
M$ NetMeeting Whiteboard
WID
Ventura width table
WIL
WinImage file
WIZ
M$ Word Wizard
WK1
Lotus 123 versions 1 & 2 spreadsheet
WK3
Lotus 123 version 3 spreadsheet
WK4
Lotus 123 version 4 spreadsheet
WKB
WKS
Lotus 123 Worksheet spreadsheet
WKS
M$ Works 4.0 Sheet or Chart
WLD
REND386/AVRIL file
WLF
Argo WebLoad I upload file
WLL
M$ Word Add-In
WMF
Windows Meta File (graphics) (binary)
WOW
Grave Composer music module (MOD) file
WP
WPW
WordPerfect document
Novel PerfectWorks document
WP4
WordPerfect 4 document
WP5
WordPerfect 5 document
WP6
WordPerfect 6 document
WPC
UNKNOWN (binary) (help appreciated)
WPD
|UNKNOWN (from Autospell)
WPD
|WordPerfect Demo
WPD
|WordPerfect 6.0/7.0 Document
WPG
WordPerfect Graphic file (bitmap or vector) (binary)
WPM
WordPerfect Macro file
WPS
M$ Works document
WPT
WordPerfect Template
WQ1
QuattroPro/DOS spreadsheet
WQ2
QuattroPro/DOS version 5 spreadsheet
WR1
Lotus Symphony
WRI
Write document
WRK
Cakewalk music audio project file
WRL
Virtual Reality model
WRZ
Another VRML fileject ?????
WS1
WordStar for Windows 1 document
WS2
WordStar for Windows 2 document
WS3
WordStar for Windows 3 document
WS4
WordStar for Windows 4 document
WS5
WordStar for Windows 5 document
WS6
WordStar for Windows 6 document
WS7
WordStar for Windows 7 document
WSD
WordStar 2000 document
WSE
UNKNOWN (from Autospell)
WTA
UNKNOWN (from Autospell)
WVL
Wavelet Compressed Bitmap (binary)
WWL
M$ Word add-in file
X
X
AVS image format
XAR
Corel Xara drawing
XBM
A MIME 'xbitmap' image file (binary)
XI
XIF
Instrument sample file for ScreamTracker
Wang imaging file (comes with Windows 95)
XLA
M$ Excel add-in
XLB
M$ Excel toolbar
XLC
M$ Excel chart
XLD
M$ Excel dialogue
XLK
M$ Excel backup
XLL
M$ Excel add-in file
XLM
M$ Excel macro
XLS
M$ Excel worksheet
XLT
M$ Excel template
XLV
M$ Excel VBA module
XLW
M$ Excel workbook / workspace
XM
FastTracker 2, Digital Tracker music module file
XM
eXtended module (audio) (binary)
XML
ASCII data file fm ACDSee
XNK
M$ Exchange shortcut file
XPM
X BitMap format image file (binary)
XR1
Epic MegaGames Xargon data file
XTP
XTree data file
XWD
X Window Dump format
XWF
Yamaha XG Works file (MIDI sequencing)
XXE
Compressed file (binary)
XXX
|Embroidery machines graphics file - Compucon/Singer (binary)
XXX
|ASCII correspondence template file (tgs)
XY3
XYWrite III document
XY4
XYWrite IV document
XYP
XYWrite III Plus document
XYW
XYWrite for Windows 4.0 document
X16
Macromedia Extra (program extension), 16 bit
X32
Macromedia Extra (program extension), 32 bit
Y
Y
YACC (Yet Another Compiler Compiler) ????
Y
YACC (Yet Another C Compiler)
YAL
Arts & Letters clipart library
YBK
M$ Encarta Yearbook
Z
Z
ZIP
ZOO
UNIX - Gzip archive (compressed)(binary)
Compressed archive (binary)
An early compressed file format (binary)