Phoar!

Want!

Bicycle, bicycle...

“It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them. Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle.” Ernest Hemingway.

And, that's all I've got to say about that. ;Þ

Common File Extensions

Have you ever wondered what .php, or .wav, or .etc meant?
Well, wonder no more!
I found a huge freaking list someplace on the intertubes. This may not be a complete list, but there are a bunch of them for sure.

Just click on the "Click Here to Read More!" link below to view the whole list.


Common File Extensions:

.??_ Files ending in "_" are often compressed install files of the same
name (e.g., .EX_ expands to .EXE, .DL_ expands to .DLL, etc.)
.A UNIX Library [UNIX]
ADA Program
.A01 ARJ Multi-volume Compressed Archive (can be 01 to 99) (also see .000)
.A01 - .A10 OzWin CompuServe E-mail/Forum Access SYSOP File
.A06 Lotto Pro 2002 Smart Number Ticket
.A11 AIIM Graphic
.A31 Authorware 3.x Library
.A3D Amapi 3D Modeling
.A3K Yamaha A3000 Sampler File
.A3L Authorware 3.x Library
.A3M Unpackaged Authorware MacIntosh File
.A3W Unpackaged Authorware Windows File
.A41 Authorware 4.x Library
.A4L Authorware 4.x Library
.A4M Unpackaged Authorware MacIntosh File
.A4P Authorware File Without Runtime
.A4W Unpackaged Authorware Windows File
.A51 Authorware 5.x Library
.A5L Authorware 5.x Library
.A5W Unpackaged Authorware Windows File
.A64 Artist 64 [XnView]
.A8 Cubicomp PictureMaker 24bit 3D Animation
.A86 A86 Assembler Program File
.AA Audio Book File
PROGNOSIS Automated Analyst Document File
.AAB Macromedia Authorware Binary
.AAC Advanced Audio Coding File
.AAM Authorware Shocked File
.AAO America's Army Map
.AAS Authorware Shocked Packet
.AAT Arcinfo Line Data Attribute Data (GIS-related file)
.AB Applix Builder File
.AB2 Parson's Address Book
.AB3 PhotoImpact Album File
.AB6 AB Stat Data
.AB8 AB Stat Data
.AB$ AutoCAD Spooled Plot File
.ABA Palm Address Book File
.ABC Flowchart
Musical Notation Language File (folk melodies originally)
.ABD AmBiz Bonus Calculator Data File
Adventure Builder Database
.ABF Adobe Binary Screen Font
.ABK Corel Draw AutoBackup
Any Automatic Backup
.ABL Maxagrid Avails Data File (text format)
.ABM HitPlayer Audio Album File
Photo Impressions 2000 Album
Album File (various)
.ABO Applix Builder Turbo File
.ABR Photoshop Brush
.ABS Abstracts
MPEG Audio Sound File [MPEG]
PC GNU Compiler Output
Abscissa Data File
Optocat [XnView]
.ABT The Arbiter Sports Official Schedule [Viewer]
.ABW AbiWord Document File
.ABX WordPerfect Address Book File
.ABZ AbszOrb (textured spinning orb creator)
.AC CaseWare Working Papers Client File
.AC_ CaseWare Working Papers Compressed Client File
.AC$ AutoCAD Undo Info
.AC3 AC3 Audio File Format [DVD Maestro, DVD Conductor]
.ACA MS Agent Character File
Project Manager Workbench File
.ACB ACBM Graphic Image
AOL Cab Launcher (archived data file)
.ACC DR-DOS Viewmax File
.ACD Chromeleon Channel Raw Data
Sonic Foundry Acid Music File
allCLEAR Flowcharting File
MS Agent Character Definiton File
.ACE The Ace Archiver Compressed File
Aces200 [XnView]
.ACF MS Agent Character File
Photoshop Custom Filter
.ACG MS Agent Preview File
.ACH Rockwell Software Logix 5 File
Speccy Snapshot
.ACI ACI Development Appraisal
.ACL Corel Draw 6 Keyboard Accelerator
MS Office AutoCorrect List
ACL For Windows (data mining software)
Access Control List
.ACM Audio Compression Manager Driver (Windows)
Photoshop Command Button
Windows System File
ACBM Image File
Interplay Compressed Sound File
.ACO Photoshop Color Swatch File
.ACP MS Office Assistant Preview File [Buy Office XP at Shop.Microsoft]
File Used by Adobe Acrobat Paper Capture
.ACQ AcqURL File (bookmark manager)
.ACR American College of Radiology File
Dicom [XnView]
.ACS MS Agent Character File
.ACT MS Office Actor Program File [Buy Office XP at Shop.Microsoft]
FoxPro Documenting Wizard Action Diagram
Photoshop Color Table
Action! Presentation
.ACU AppleLink-PE Compression Format (created by Floyd Zink; overtaken by Andy Nicholas' ShrinkIt; ShrinkIt should unpack)
COBOL Intermediate Object File
.ACV OS/2 Audio Drivers
Photoshop Saved Curve Also see
.ACW MS Accessibility Wizard Settings
.AD AfterDark Screen Saver
Ascend Password Protocol File
.AD! OzWin CompuServe E-mail/Forum Access QS-Special - Get Marked Online
.AD2 2-bit Compressed Voice File
.AD3 3-bit Compressed Voice File
.ADA ADA Program File
ActiveDocs Answer Set
.ADB ADA Package Body
HP Organizer Appointment Database
.ADC Chromeleon Demo Data File
ActiveDocs Clipping Catalog
Scanstudio 16-color Bitmap Graphic File
Lingvo Dictionary Text File
.ADD OS/2 Adapter Device Driver
Adobe Pagemaker File
Advantage Database Server Data Dictionary
.ADE MS Access Project Extension [Buy Office XP at Shop.Microsoft]
ADC Audio File
.ADF Adapter Description File
Admin Config File
Amiga Disk File (Uncompressed 901120 byte DD Diskimage) [Amiga Forever]
Dog Creek QC Mask File
.ADI AutoCAD Plotter File
Advantage Data Server Database Index File
.ADJ LISCAD Plus Adjustment File
.ADL QEMM MCA Adapter Description Library [MCA]
OzWin CompuServe E-mail/Forum Access QS-Special Get Marked
.ADM After Dark Screen Saver Module
Windows Policy Template
Addict Compiled Dictionary
Advantage Data Server Database Memo File
.ADN 1-2-3 Add-in Utility
MS Access Blank Project Template [Buy Office XP at Shop.Microsoft]
.ADO Photoshop Duotone Options
Stata Program
.ADP FaxWorks Modem Setup File
Astound Dynamite File
MS Access Project [Buy Office XP at Shop.Microsoft]
AOLserver Dynamic Page File [AOL]
.ADR After Dark Random Screen Saver Module
Address Plus Database
Smart Address Address Book
Address Book
Opera Web Browser Bookmark File
.ADS ADA Package Specification
.ADT HP NewWave Card Application Data File
Advantage Data Server Database File
Lingvo Dictionary File
AdTech Fax File
.ADV GUS Virtual Device Driver
.ADX Lotus Approach Index File
Archetype Designer Document
Dynazip Active Delivery Script
Sega Dreamcast Audio File [Source of files]
.ADZ GZ-Packed Amiga Disk File (see ADF) [Amiga Forever]
.AE SoftQuad Author/Editor File
.AEF ELECTRICAL Designer
.AEH iPer Advanced Embedded Hypertext
.AEP ArcExplorer Project File
.AER Adobe Atmosphere File [As of Mar 2002 in beta]
.AEU MS AutoRoute Express Europe Route
.AEX PGP Armored Extracted Public Encryption Key [PGP]
.AF2 ABC Flowchart (Now Micrografx FlowCharter)
.AF3 ABC Flowchart (Now Micrografx FlowCharter)
.AFC Apple Sound File
ArisFlow Commander File
.AFD ArisFlow Diagram
Prismo Graphics ActiveFile Data
.AFF AnyForm Form
.AFI Truevision Bitmap Graphic
.AFL Lotus Font
.AFM Outline Font Metric
HP NewWave Cardfile Application
LOUT File (High-Level Language For Document Formatting)
.AFP Flowchart Symbol Palette
Papyrus Document Storage Format
Prismo Graphics ActiveFile Proxy
IBM Transactional Data Format (Advanced Function Print) (AS400 computer)
.AFS Filter Factory Photoshop Filter [Added]
Sega Dreamcast Compressed Audio
.AFT Flowchart Template
AnyForm Template
.AFW Flowchart Work Area
.AFX Auto FX Photographic Edges (Photoshop add-in)
.AG Applix Graphic
Argus Spreadsheet File
.AG4 Access G4 File [Buy Office XP at Shop.Microsoft]
.AGF Atlas GeoFile
.AGP Aspen Graphics Pages
.AGW Aspen Graphics Windows
.AHQ AudioHQ Plugin Module
.AHS Photoshop Halftone Screens
.AI Adobe Illustrator Vector Graphic [XnView]
Corel Trace Drawing
Progress Database After Image File
Advantage Database Server File
EARS Component File (EARS = UK Liberal Democrats Election Agents Record System) [Filename starts with E]
.AIF Knowledgeware Setup Information
Audio Interchange File [IrfanView]
SymbianOS Application Information File (set application properties)
.AIFC Audio Interchange File [IrfanView]
.AIFF Audio Interchange File [IrfanView]
.AIH ArcView Optional Index File (GIS-related file)
.AIJ Oracle After-Image Journal
.AIL AutoImager File (batch image conversion)
.AIM AOL Instant Messenger File [AOL]
.AIML Artificial Intelligence Markup Language
.AIN AIN Compressed Archive
ArcView Optional Index File (GIS-related file)
.AINSO VAX CRYSTALS Chemical Crystallogaphy File
.AIO APL File Transfer Format
.AIP Audiosoft Parameter File
.AIQ AzureIQ Client File (IT Audit Reporting)
.AIR Align It! Resource File
Flight Simulator Aircraft Performance Info File [Free Flight Dynamic Editor]
.AIS Array of Intensity Samples (Graphic)
Velvet Studio Instruments
ACDSee Image Sequence File
.AIX HP NewWave Cardfile Application Data
.AKF Acrobat Key File
.AKW RoboHELP Help Project Index File
.AL Oracle File (used for networking)
.ALA Alan Adventure Language File
Sharp Fax File (unverified)
.ALB JASC Image Commander Album
Steinberg Cubase or VST Backup Song File
Photo Soap2 File
.ALBM webAlbum Photo Album
HP Photosmart Photo Printing Album
.ALC Norton Internet Security Ad Server File
MP3 Embedded Dynamic Lyrics
.ALE Avid Log Exchange
.ALF Abacus Law File
ALF Logic File ("Another logical framework"--structure editor for Martin-Löf's monomorphic type theory)
AdventNet Look and Feel Standards (ALFSTANDARDS.ALF)
Aventail Connect License File (AVENTAIL.ALF)
VPCom Remote User Configuration File
LANDesk Client Manager Configuration File
ACT! User Logon Tracking
Color Quick Label
Cadence Ambit BuildGates
.ALI SAP Proprietary Format Document File
OM2 OMALI Native OMALI Document
.ALIAS Alias Image [XnView]
.ALL Arts & Letters Symbols and Characters
WordPerfect Printer Info
Steinberg Cubase or VST Song File
Always Working Page Format File
.ALS Alias Image [XnView]
Calmira Shortcut File
.ALT WordPerfect Menu File
.ALV Photoshop Levels
Aladdin Knowledge Systems Vbox Available Languages File (software distribution)
.ALX OM2 OMALI Plug-in Extension
.ALZ ALZip Compressed File (Korean site)
.AM Applix SHELF Macro
Advantage Database Server File
.AM2 AutoPlay Menu Studio Version 2
.AM3 AutoPlay Menu Studio Version 3
.AMB Radiance Ambient File Format
.AMC Ant Movie Catalog
.AMF Advanced Module Format Music File
DSMIA/Asylum Module Music
.AMG AMGC Compressed Archive (alternate site)
AMG ACTOR System Image
.AMI Cocreate SolidDesigner Annotation File
Amiga Paint [XnView]
.AML AutoMage (Automation/Macro Software)
.AMM AMM File (pattern design pgm for Universal flat knitting machines)
.AMP Photoshop Arbitrary Map Settings
.AMS Extreme's Tracker Module Format
Photoshop Monitor Setup
Velvet Studio Module
.AMZ The Amazon Trail Saved Game
.AN Groundworks Text File
.AN8 Anim8or 3D Animation
.ANC Canon Computer Pattern Maker File
.ANF AcuteNotes File (contains one or several notes order in a hierarchy)
.ANI Animated Cursor Microangelo [IrfanView]
.ANL Project Analyzer Saved Analysis
.ANM DeluxPaint Animation
.ANN Help Annotation
.ANO Annotation File (often used with annotating PDF files)
.ANS ANSI Graphic [ANSI]
MS Word Text and Layout [Buy Office XP at Shop.Microsoft]
.ANSR AnswerTool File
.ANT SimAnt for Windows Saved Game File
.ANV AirNav [XnView]
.AOB DVD Audio File (MPEG-2 program streams with additional info)
.AOF Acorn Object Format (used for data storage)
.AOS Nokia Add-on Software
.AOT ZenWorks Application Binary Object Template File
.AP Applix Presents File
Datalex EntryPoint 90 Data File
WHAP-Compressed Amiga Archive
.APA AlfaPad Organizer File
ArcPad 6 Applet
.APC Lotus Printer Driver Characters
Centura Team Developer Compiled Application File
.APD Lotus Printer Driver
Centura Team Developer Dynamic Application Library File
.APE Music Format [Many different players]
.APF Lotus Printer Driver Fonts
ArcPad 5 Profile
Acrobat Profile File
Homesite Project File
Fax2000 File
.API Lotus Printer Driver Info
Photoshop Ink Colors Setup
Application Program Interface
Acrobat Plug-in
1st Reader Passed Parameter File
.APIN Adobe InDesign Import/Export Filter
.APJ Angel Debug Monitor Project File (link is PDF file)
Music Screen Saver File (usually associated with .SCR file)
ARM Project Manager File
.APK GameSpy Arcade Service
.APL Centura Team Developer Application Library File
ArcPad 6 Layer
APL Workspace File
.APM ArcPad 6 File
.APO Apollo Scripts
.APP R:Base, Symphony, DR-DOS, FoxPro (or other) Application
Centura Team Developer Normal Mode Application File
dBASE Application Object File
ArcPad 5 Project
SymbianOS Application
CLARION for Windows Application
Executable Application (under DR-DOS, NeXTstep, Atari)
.APR Lotus Approach 97 File
ArcView Project File (GIS-related file)
Employee Appraiser Performance Review File
.APS MS Visual C++ File
ArcPad 5 Symbology File
Advanced Patching Systems with Error Checking
.APT Centura Team Developer Text Mode Application File
Lotus Approach Data View File
Nimbus 7 SAMS Data File (a-priori temperature profiles)
.APX Lotus Approach Paradox-specific Information File
Borland C++ Appexpert Database
ArcPad 6 XML File
Ability Photopaint Image [XnView]
.AQ Applix Data
.AR Compressed Archive File (used by MS Midtown Madness 1 & 2 games)
Midtown Madness City Add-on
.ARA ATI Radeon Video Driver File
.ARC Archive File
.ARCHIMEDES Speccy Snapshot
.ARF Automatic Response File
.ARH ArHymo Hydrologic Simulation ()
.ARI Aristotle Audio File
Compressed Archive
.ARJ Compressed Archive (Stuffit can expand)
.ARK Compressed Archive
.ARL AOL Organizer File [AOL]
.ARM Armadillo Software Protection System
.ARN Astronomical Research Network [XnView]
.ARPX8 Techno Toys Arp-X8 MIDI Arpeggiator File
.ARQ Compressed Archive (often on a Macintosh)
.ARR Atari Cubase Arrangement
.ARS Artifax Report Editor (SQL query tool)
.ART Clip Art File
Xara Studio Drawing
Blood Archive [Dragon UnPACKer]
Duke Nukem 3D Archive [Dragon UnPACKer]
Canon Crayola Art File
Another Ray Tracer Format
AOL Johnson-Grace Compressed File [AOL]
First Publisher Raster Graphic
PFS: Art Publisher [XnView]
Art Director Image [XnView]
Artisan [XnView]
.ARV Arsiv File
AutoRoute User Information
.ARX Compressed Archive
.ARY Compaq SmartStart Scripting Toolkit File
.AS Applix Spreadsheet
Macromedia Flash Action Script (include files when writing large scripts)
.AS3 Alternate Sources Data File [Warning: Link goes to a sexually-oriented site.]
APL*PLUS II/386 and III/Windows Source Code
.AS4 AS/400 Client Access
.ASA MS Visual InterDev File
Active Server Document
.ASC ASCII Text File [ASCII]
PGP Armored Encrypted File [PGP]
.ASCX Web User Control (part of MS .NET)
.ASD MS Word Automatic Backup [Buy Office XP at Shop.Microsoft]
Lotus Screen Driver
MS Advanced Streaming Format Description File
Astound Presentation
.ASE Velvet Studio Sample
.ASF MS Active Streaming (Media) File (contains audio and/or video compressed with 3rd party codecs)
Statgraphics Data
Lotus Screen Font
APL*Plus/PC APL Shared File
Electronic Arts Music File
.ASH TASM Assembler Header
.ASI Borland Assembler Include
.ASK askSam Database
.ASM Assembler Source Language (various)
Pro/Engineer Assembly File
.ASMX ASP.NET Webservices Source File
.ASO Assembler Object
Astound Dynamite Objects
.ASP Active Server Page
Procomm Plus ASPECT Program
Astound Presentation File
Photoshop Photo File Index
Photoshop Separation Setup
EROSION 3D Aspect File [Format (pdf)]
.ASPI Audio Catalyst
.ASPX ASP.NET Source File
.ASR Ms Automap Route
Photoshop Scratch Area
.ASS Assembler/Disassembler 68HC11 File
ASS I/O (programmers utility to pack multiple files into one file)
.AST Astound Multimedia File
Photoshop Separation Tables
Claris Works Assistant File
.ASV DataCAD Autosave File
Photoshop Selective Color
.ASX Metafile (points to an .ASF structured file)
Cheyenne Backup Script
Video File
.AT2 Aldus Persuasion 2.0 Auto Template
DCX-AT200 Motion Control Command Language File
.AT3 DCX-AT3000 Motion Control Command Language File
.ATF Photoshop Transfer Function
.ATK Bitmap Image (Andrew Toolkit Raster Object file) [XnView]
.ATL Hal/Supernova/Lunar/LunarPlus Screen Readers/Magnifiers
PROGNOSIS Atlas Document File
.ATM Adobe Type Manager Data File
.ATN Adobe Photoshop Action File
.ATO Just Burn File (audio CD burner on Compaq computers)
.ATR Lightscape Material Library
.ATS Attityd Swedish Survey Program
.ATT AT&T Group 4 Bitmap (fax) [XnView]
.ATW AnyTime Deluxe PIM File [PIM]
Attityd Swedish Survey Program
.ATX A ZIP-formatted Compressed Archive (Use any ZIP program to open)
.AU Music File (various, usually Sun or UNIX) [IrfanView] [Linux Player]
.AUD Audio File used by Westwood Studios for various games
.AUP ePocrates File
.AUT AutoIt Script (automate any windows based task)
PocketWear Car Lease Kit Vehicle Data File (Pocket PC)
TLG Workplace CD Search File
Xitami Webserver Admin Password File (default.aut)
GPSMan-autoMapic File (moving-map real-time plotting)
Signwave Auto-Illustrator File
Descent Manager Mission File
Authentication File (various)
Interactive Pictures iPIX Format
.AUX TeX/LaTeX Auxilliary Reference File
ChiWriter Auxilliary Dictionary File
.AV Final Draft AV Document File
.AVA Avagio Publication
.AVB Inoculan Anti-Virus Virus Infected File
Avid Bins File
Microsoft Chat Character File
.AVC Kaspersky Antivirus Toolkit File
.AVD Avery Label Pro Data File
.AVI Audio Video Interleave File [IrfanView]
.AVL ArcView Theme Legend File (GIS-related file)
.AVP ArcView Pallet File (GIS-related file)
Avid Project File
.AVR Audio Visual Research Sound File
.AVS Animation File
Application Visualization System Format
Stardent AVS X Image [XnView]
Winamp Advanced Visualization Studio File
Avid Settings File
.AVX ArcView File (GIS-related file)
Avid Extensions File
.AW HP AdvanceWrite Text File
MS Answer Wizard File
Applix Word File
.AWB Lavasoft Ad-aware Backup File
.AWD Faxviewer Document (AWD Microsoft Fax) [PolyView Viewer]
Award BIOS File
AWK Language Source Code File
.AWE Adobe Acrobat Bookmark XML File
.AWF Qui veut gagner des millions Archive [Dragon UnPACKer]
Who wants to be a millionaire Archive [Dragon UnPACKer]
.AWK AWK Script
.AWM Animation Works Movie
.AWR Telsis Digital Audio File
.AWS StatGraphics Data File
.AWX MS DirectX 8.1
.AX DirectShow Filter
DivX MPEG-4 DVD Filter [some filters work with Windows Media Player]
.AXD Avery Label Pro Re-Index File
.AXE Paradigm C++ Integrated Debugger File
ChordMaster (Chord Chemistry and Sequencing program for guitarists)
MS Autoroute Export File
.AXG MS Autoroute Trip File
.AXL ArcIMS XML Project File [XML]
.AXP GraphStore eCADLite File
.AXR Telsis Digital Audio File
ElcomSoft Advanced Archive Password Recovery
.AXS MindAvenue AXEL Stream File
.AXT ZenWorks snAPPshot ASCII Application Object Template
Photoshop Replace Color/Color Range
.AY AY Chip Sound File (chip used in ZX spectrum and other arcade machines)
.AZ WinDVD File
.AZZ AZZ Cardfile Personal Information Manager
.??_ Files ending in "_" are often compressed install files of the same
name (e.g., .EX_ expands to .EXE, .DL_ expands to .DLL, etc.)
.B Limbo Implementation File (Inferno OS)
Brainf*ck Program (small programming language)
Befunge Program
Applause Batch List
.B02 ADP Payroll (unverified)
.B16 PCO Graphic [XnView]
.B1J BookJones
.B1N 1st Reader Binary Screen Image
.B1S BookSmith
.B30 Ventura Publisher Printer Font
.B3D 3D Builder File
BDE Multipath Movie Digital Viewer
.B4 Helix Nuts and Bolts File (Helix Software now part of McAfee)
.B5S Numerical Controlled Machine File (Ball-bar?)
.B64 Base 64 MIME-encoded File [MIME]
.B8 Piclab Raw Graphic File
.B&W Atari Black and White Graphics
1st Reader Mono Binary Screen Image
Image Lab [XnView]
.B_W Atari/Macintosh Black and White Graphic
1st Reader Mono Binary Screen Image
Image Lab [XnView]
.BAC Backup
.BAD Rime Mailer Address File
Oracle BAD File
Brutus Application Definition File (password cracking)
.BAG PMMail Mail Index File
OS/2 Netfinity Manager Sysinfo File (adapter.bag)
AOL Instant Messenger File
Emperor: Battle for Dune Archive [Dragon UnPACKer]
.BAK Backup
.BAL Ballade Music Score
.BAN Sierra Print Artist Banner
.BAR dBase Application Generator Horizontal Menu Object
.BAS BASIC Language Source
Basic Module
.BAT Batch Processing (DOS Batch File)
.BB Papyrus Database Backup
Blitz Basic File
Starfleet Battles DOS Game
.BB2 XBBS-OS/2, XGROUP, AV and ZTree Archiver Control File
.BBC BBC BASIC File
.BBL TeX/BibTeX Bibliographic Reference File
.BBM Deluxe Paint Image File
.BBMA Bonzibuddy
.BBP BitBeamer Split File (of the form .??_??.bbp)
.BBQ BitBeamer Transfer Queue File
.BBS Bulletin Board Sytem Text
.BC Sierra Print Artist Business Card
.BC3 Fiebdc-3 Format File (Format of Interchange ESTANDAR of Data bases of CONSTRUCTION)
.BCC Calendar Creator 8 Collection
.BCF ConfigSafe Snapshot Index
The Sims (Maxis) 3D Body Mesh File
.BCH dBase Application Generator Batch Process Object
Datalex EntryPoint 90 Data File
Phoenix Software (Datalex) Entry Point 90 Data File
.BCK Backup
.BCM MS Works Communications File
.BCN Business Card Pro Design
.BCO Bitstream Fontware File
.BCP Borland C++ Makefile
.BCW Borland C++ 4.5 Environment Settings
.BDB MS Works Dababase File
.BDE Borland Database Engine (embedded in many different programs)
.BDF West Point Bridge Designer File
.BDF Egret Data File
X11 Bitmap Distribution Format
Backup To CD-RW Backup Definition File
.BDG Badge Designer 2000 Photo ID
.BDR MS Publisher Border [Buy Office XP at Shop.Microsoft]
.BEC Break Even Calculator
.BED InfoSnorkel Blue Elephant Definition (define content InfoSnorkel extracts from web page)
.BEZ Bitstream Fontware File
.BF Brainf*ck Program (small programming language)
Befunge Program
.BF2 Bradford 2 Font
.BFA Blowfish-encrypted File (Extension added to original) [Program List]
.BFC Briefcase File
.BFF AIX® Backup File Format
.BFFM B17 Flying Fortress Game File (link is to support page)
.BFL Colin McRae Rally 2 Data File
BFLI [XnView]
.BFLI BFLI [XnView]
.BFM UNIX Font Metrics File
.BFX BitFax Document
BFX Bitware [XnView]
.BG MS Backgammon for Windows Game
.BGA OS/2 Graphic Array [XnView]
.BGB MS Chat Background Graphic
.BGI Borland Graphic Interface
.BGL Flight Simulator Scenery File
.BGM Jane's Combat Simulations F-15
.BH BlackHole Archive Format File [ZipTV]
.BHF pcAnywhere Host File
.BHTML BabuHTML Embedded Software File (example use: netMailshar)
.BHX Archive File
.BI Binary File
Progress Database Before Image File
.BIB Bibliography
Papyrus Database
TeX/BibTeX Literature Database
.BIC Civilization III Scenario
.BID BidMaker 2002 File (software to aid in making bids on jobs)
.BIE JBIG File [XnView]
.BIF GroupWise Initialization File
Image Capture Board Binary Black & White Image
Baldur's Gate Archive [Dragon UnPACKer]
Planescape: Torment Archive [Dragon UnPACKer]
.BIG Chinese (old version)
Cartes Michelin [XnView]
.BIK BioCharter Profile Backup File
Bink Game Video File
.BIN Binary File (many)
.BIO BioCharter Profile File
OS/2 Bios File
.BIT Bitmap Image
Worms Armageddon Imported Map
Worms World Party Imported Map
.BIZ Broderbund Print Shop Business Card File
.BJF NTI Backup NOW! File
.BK Backup
LinguAssist File
JetFax Faxbook File
.BK! Backup
.BK$ Backup
.BK? Backup (Can be 1 to 9, usually with WordPerfect)
.BK1 Bach Preludes and Fugues MIDI akmi Source, Book 1
.BK2 Bach Preludes and Fugues MIDI akmi Source, Book 2
.BKF Moto Racer Archive [Dragon UnPACKer]
MS WindowsXP Backup Utility (Note: This is default; can be renamed to any extension.)
.BKG Background File (used in many games/programs)
UWXAFS Binary Format Data File (absorption data on an energy grid which does not need to be evenly spaced)
.BKI Backup Index
.BKP Backup
.BKS Bookshelf Backup
IBM BookManager Read Bookshelf
MS Works Spreadsheet Backup
.BKU Timeslips Backup
.BKW FontEdit Fontset Mirror Image
.BLA Blat E-mail (command line E-mail tool written for Windows)
.BLB DreamWorks Resource Archive
.BLD BASIC Bload Graphics
MegaPaint [XnView]
VersaPro Block Build Info
.BLEND Blender 3D File
.BLG Windows Binary Performance Log
.BLK WordPerfect Temp File
Lightscape Block Library
Alias Wavefront Image
Amiga IFF [XnView]
VersaPro Block
.BLL An extension used by the VBS/European-A worm.
INPRISE Format Language Library (changed to .BTL)
.BLT Wordperfect for DOS File
Saved AIM Buddy List File
.BLZ Bitmap Graphic
Twinkle Bulbs Bulb File
Emblaze.Creator File
Blazon Heraldic Shield
Serial Number File [IBM's Drive Fitness Test (DFT) program]
.BM Bitmap Graphic
.BM1 Apogee BioMenace Data File
.BMF Corel Flow Image File [XnView]
.BMI Buzz Instrument
Blue Martini Import File (eCRM)
.BMK Help Bookmark
.BMP Windows OS/2 Bitmap Graphics [IrfanView]
.BMS Backup Magic Backup Set
.BMU Music/Sound File [Open with Winamp or other MP3 player]
.BMW Buzz Music File with Waves
.BMX Buzz Music File
Siemens Mobile Phone Animation
.BMZ Demon Stalkers: Raid on Doomfane (old game)
.BN AdLib Instrument Bank
.BNG [Used by program RANGER.EXE] (Marshalling Yard Calculations)
.BNK Adlib Instrument Bank
SimCity Game File
(reported to be) Bink Compressed Video/Audio File
.BNR Binary News Reader File
.BNSKIN Beatnik Clock Skin
.BOB BobDown Downloading Program [Also see Antibob]
Bob Raytracer [XnView]
.BOL MS Booasm Compressed Archive Library
.BOM Orcad Schematic Capture Bill of Materials File
Softshare Delta Business Object Model
.BOO Image File
Book
Compressed Archive File
.BOS Brotherhood of Steel Compressed File (renamed ZIP file; use any extractor)
.BOT Frogbot Editor (Frog = Quake add-on computer opponent)
.BOW Back Orifice 2K Workspace [this is a hacking tool]
.BOX Notes Mailbox
Lemmings Revolution Archive [Dragon UnPACKer]
ThrottleBox Multimedia Viewer
Aladdin Knowledge Systems Vbox Helper Application File (software distribution)
.BOXR Boxerjam Interactive Game System
.BPC Business Plan Toolkit Chart
BuildPro File
.BPL Delphi Library
.BPP MUSICMATCH Burner Plus Project
.BPR Borland C++ Builder 6 Project
BackupXpressPro Project File
.BPS MS Works Document
Bulletproof FTP Settings
.BPT Bitmap Master File
.BPX Truevision Targa Bitmap [XnView]
.BQY BrioQuery File
.BR Bridge Script
The Playa File (link is tentative)
.BR3 Bryce 3D Scene File (Bryce made by MetaCreations, changed to Viewpoint, product taken over by Corel)
.BR4 Bryce 4 File (Bryce made by MetaCreations, changed to Viewpoint, product taken over by Corel)
.BRC Bryce 2 Scene File (Bryce made by MetaCreations, changed to Viewpoint, product taken over by Corel)
.BRD EAGLE Board File
.BRI Basic Rate Interface File
.BRK Brooktrout Fax-Mail File [XnView]
.BRO Tree Professional Broadleaf Creator File
.BRP Tree Professional Broadleaf Creator Image
.BRS Corel Paint Classic File
.BRT Brooktrout Fax-Mail File [XnView]
.BRU Brutus Restore File (password cracking)
.BRW Application file associated with financial institution(s) loan applications
.BRX Multimedia Browsing Index
.BRZ DbBRZ File (Backup or Restore)
.BS Printfox/Pagefox [XnView]
.BS_ MS Bookshelf Find Menu Shell Extension
.BS1 Apogee Blake Stone Data File
.BS2 Basic Stamp 2 Code File (WordPad or BS2-Editor)
.BSA BSARC Compressed Archive
.BSB SWAT Sub-basin Output File (river basin scale model)
MapInfo Sea Chart
.BSC Apple II Compressed Archive
Source Browser Database
Fortran Pwbrmake Object [FORTRAN]
Boyan Script
MS Developer Studio Browser File
.BSK Bryce 4 File
.BSP Quake Map
Half-life/TFC/CS Map
.BST BibTeX Style File
.BSU Brindys BriTray (software update)
.BSV BASIC Bsave Graphics
.BTAB Base Guitar Tabulature [On-line Guitar Archive]
.BTL INPRISE Format Language Library (changed from .BLL)
.BTM 4DOS Batch To Memory Batch File
.BTN ButtonWare File
JustButtons Animated Bitmap [XnView]
.BTO Baytex Organix! 2001 Language Kit
.BTR Btrieve Database File
MS Frontpage-related File [Buy Office XP at Shop.Microsoft]
.BTS Creative Digital Blaster Digital VCR File
.BUD Quicken Backup
.BUF WinXL File (Datascope emulation software)
.BUG Bug (Problem) File
.BUL Holiday Lights Screen Saver Bulb File
.BUM Poser Bump [XnView]
.BUN CakeWalk Audio Bundle File
.BUP Backup DVD Info File
PC-Bibliothek Update File
CD Indexer
Brother Embroidery System File
Softcode Tracker Contact Manager Backup (Australian software no longer sold)
.BUT Buttons! Button Definition
.BUY Movie Data File
.BV? WordPerfect Overflow File (Can be 1 to 9)
.BVH Biovision Motion File [Format] (Used by Poser and other software)
.BVS BVS Solitaire Collection
.BW SGI Black and White Image
Silicon Graphics Raw RGB File [XnView]
.BWB Visual Baler Spreadsheet File
.BWI Blindread/Blindwrite
.BWR Kermit Beware Bug List
.BWS Blindread/Blindwrite
.BWT Blindread/Blindwrite [Fantom CD Emulator]
CDmage Table of Contents
.BWV Business Wave File
.BXF Man's Best Friend Software Breeder Exchange Format
.BXX blaxxun Contact
.BYU Movie File (Shockwave)
.BZ Bzip UNIX Compressed File (Open using WinRAR
.BZ2 Bzip UNIX Compressed File (Replaces .BZ) (Open using WinRAR
.BZF Textures and Other Information (used by various games)
.??_ Files ending in "_" are often compressed install files of the same
name (e.g., .EX_ expands to .EXE, .DL_ expands to .DLL, etc.)
.C C Program File
Check Point Site Configuration for Secure Remote
UNIX Compact File Achive
Desktop Color Separation Specification Cyan Layer (usually an EPS file)
.C?? Winace Compressed File (open with WinRAR)
.C++ C++ Source Code
.C-- Sphinx C-- Source
.C00 Ventura Print File
.C01 Typhoon Wave File
.C08 Lord Of Destruction Game File (unverified)
.C2D IsoBuster File
WinOnCd CD Image
.C3D Chem3D Chemical File
.C3T Chem3D Chemical Template File
.C4 JEDMICS (Joint Engineering Data Management) DoD Engineering Data Format [For-pay Viewer]
Edmics [XnView]
.C4D Cinema 4D (3D Modeling texturing and animation program)
.C6 Ashlar-Vellum File
.C86 C86 C Program
.C-- Sphinx C-- Source code
.CA Telnet Server Initial Cache Data File
DATAIR FlexPlus Data File
.CA1 OzWin CompuServe E-mail/Forum Access Catalog File
STABCAL (stability calculation for aqueous systems) File
.CA2 STABCAL (stability calculation for aqueous systems) File
.CA4 Electronics Workbench Circuit
STABCAL (stability calculation for aqueous systems) File
.CA7 Beta 44 Job File
STABCAL (stability calculation for aqueous systems) File
.CAB Cabinet File (Microsoft installation archive)
Install Shield v5.x or 6.x Compressed File (not compatible with MS .CAB files)
.CAC dBase IV Executable File
.CAD Softdesk Drafix CAD File
.CAF Southern Company Terrestrial Data Acq
.CAG MS Clip Gallery Catalog File
.CAL SuperCalc Worksheet
Calendar File
HTML Calendar Maker Pro
DOS Calendar Creator File
Cals Raster File [SwiftView]
Radiance Function File Format
CALS Raster [XnView]
.CALS CALS Raster [XnView]
.CAM Casio Camera Graphic [XnView] [IrfanView]
Camtasia Project/Producer Files (screen recording editor)
.CAN Canon Navigator Fax [XnView]
.CAP Ventura Caption
Network Associates Sniffer Capture File
Telix Session Capture
Compressed Music File
.CAR AtHome Assistant File
Carrara Environment
NeoBook Cartoon [XnView]
.CAS Comma-delimited ASCII File
i2's Case Notebook Timeline Analysis
Casio Program
.CAT dBase Catalog
Quicken IntelliCharge Categorization File
Cognos Impromptu Database Report
OzWin CompuServe E-mail/Forum Access Catalog File
Photomatrix PhotoStudio Graphic [XnView]
.CAZ Computer Associates Archive
.CB MS Clean Boot File
Crystal Button File
Brief Macro Source Code
.CBC CubiCalc Fuzzy Logic System File
.CBH ChessBase Chess Database File
.CBI IBM Mainframe Column Binary Formatted File
.CBL COBOL Program
Contextual Browsing Language Viewer (usually JavaApplet)
.CBM XLib Compiled Bitmap
Fuzzy Bitmap [XnView]
.CBT Computer Based Training
.CC C++ Program File
Visual dBASE Custom Class File
dB2K Custom Class File
Picture Window's Color Curve File (ASCII text file)
.CC1 Chem3D Cartesian Coordinates 1
Briggs Softworks Calendar Commander
.CC2 Chem3D Cartesian Coordinates 2
.CC5 Calendar Creator 5.x 6.x File
.CCA CC:Mail Archive File
Multimedia Fusion File (multimedia game creation)
.CCB Visual Basic Animated Button Configuration
.CCC Chat
Curtain Call Native Bitmap Graphic
.CCD CloneCd Related File [Fantom CD Emulator]
Vector CAD Program File
.CCE Calendar Creator 2 Event File
.CCF OS/2 Multimedia Viewer Configuration File
Symphony Communications Configuration File
Remote Control File (various to include: ProtoProEdit, RAVedit)
AudioReQuest Control File
.CCH Corel Chart
Fabasoft Components
.CCL Intalk Communication Command Language
.CCM Lotus CC:Mail Mailbox
.CCN Vitalize! Game File [Played via IE plug-in]
.CCO CyberChat Data File
XBTX BTX Graphics File
.CCP C Converter Profiles (construction site management)
.CCR Chat Room Shortcut
.CCS CONKY CeZaR Stribas International
.CCT Macromedia Director Shockwave Cast
Logic Works Schematic File
SIL Hebrew Font System Transliteration Table
.CCX Corel Compressed Exchange File
.CD cdTree Content List
.CD1 DATAIR Cafeteria Document System Data File
.CD2 DATAIR Cafeteria Document System Custom Text File
.CDA CD Audio Track
.CDB Turbo C Database
Clipboard File
One Page from a ROM With a View Project File
CardScan Database
Nokia 9210/9290 Contact Database (Nokia runs Symbian)
SymbianOS Contact Database File
PowerDesigner Conceptual Model Backup File
.CDC Chromeleon Driver Configuration Plugin
Nero File (CD burning/design software)
.CDD Chromeleon Device Driver
Claris Draw v 1.2 Document
.CDE Honeywell Hybrid Control Designer (HC900-x Industrial Controllers)
.CDF Comma Delimited Format
Cyberspace Description Format
MS Channel Definition Format
InstallShield Components Definition File
NetCDF Graphic File
.CDG DART Karaoke Studio CD+G File (contain only song lyrics and synchronization data)
.CDI Phillips Compact Disk Interactive Format
Disc Juggler File (CD-ROM data)
.CDJ Disc Juggler File (CD-ROM data)
.CDK Atari Calamus Document
.CDKEY Protocol Used in Communicating from MediaRemote Server to PC MediaRemote Plug-in (ASCII text)
.CDL CaseWare Working Papers Document Link
SignLab Vector Graphic
.CDM PowerDesigner Conceptual Model File
Visual dBASE Custom Data Module
.CDP CD/Spectrum Pro
.CDR Corel Vector Graphic Drawing [XnView]
Raw Audio-CD Data
Sound File [Linux Player]
.CDS ChemDraw Stationery Document
.CDT Corel Draw Template
STABCAL (stability calculation for aqueous systems) File
.CDU CDU Paint [XnView]
.CDX Compound Index [File Structure]
Corel Draw Compressed Drawing
MS Visual Foxpro Index
Active Server Document
ChemDraw Chemical Structure
Microstation Cell Library Index
.CDXL Old Amiga Movie Format
.CDXML ChemDraw XML ChemDraw Format
.CDZ ROM With a View Project File
.CE FarSide Computer Calendar File
Computer Eyes, Digital Vision [XnView]
.CE1 Computer Eyes, Raw [XnView]
.CE2 Computer Eyes, Raw [XnView]
.CE3 Calendar Creator 3.x 4.x Event List
.CEG Continuous Edge Graphic
Tempra Show Bitmap Graphic
.CEL Autodesk Animator Graphic
CIMFast Event Language File
Kiss Paper Doll File
Microstation Cell Library
Kiss Cel [XnView]
Lumena CEL [XnView]
.CEM Empire Earth Game File
.CEN Master Tracker Financial Analysis
.CER Certificate File
Sierra Print Artist Certificate
.CEV Software License Tracking Tool (CERTAUTH.CEV)
LOUT Character Encoding File (High-Level Language For Document Formatting)
.CEX The Currency Exchanger Rate File
INMOS Transputer Development System Occam User Program
ThumbsPlus File (Progressive Multi-image JPEG file)
.CF Imake Configuration File
.CF4 Catfish File Manager Support File
.CFB Comptons Multimedia File
.CFC Cold Fusion File
.CFF Capabilities File for FOUNDATION(tm) Fieldbus H1 (31.25 kbit/s)
.CFG Configuration (various)
.CFH Capabilities File for FOUNDATION(tm) Fieldbus HSE (100 Mbit/s)
.CFL Corel Flowchart File
.CFM Corel FontMaster
Cold Fusion Template File
Visual dBASE Windows Customer Form
.CFN Atari Calamus Font Data File
.CFO TCU Turbo C Utilities C Form Object
.CFP Complete Fax Portable Fax File
.CFR IBM Configurator Report (if you don't have the program ask the sender to export to .RTF for you)
.CFW ChemFinder Form
.CGA Ventura CGA Screen Characters
.CGI Common Gateway Interface Script
.CGM Computer Graphics Metafile
.CGP NetCaptor CaptorGroup
.CH Clipper Header
OS/2 Configuration File
.CH3 Harvard Chart (Harvard Graphics taken over by Serif)
.CH4 Charisma 4.0 Presentation
.CHA Adobe Pagemaker Kerning Data
.CHAT PIRCH98 Chat File
.CHD FontChameleon Font Descriptor
ChartFX File
.CHF pcAnywhere Remote Control File
.CHI Chiwriter Document
Help File Index (typically used when the Help file will stay on a CD-ROM -- .CHI speeds access to the info)
.CHJ Help Composer Project
.CHK CHKDSK/SCANDISK Output
WordPerfect Temp File
.CHL Chromeleon Channel Raw Data
Configuration History Log
.CHM Compiled HTML Help
ChemDraw Chemical Structure (old format)
.CHN Ethnograph Data File
.CHP Ventura Publisher Chapter
.CHQ Help Combined Full-text Search File (produced when multiple .CHM files are merged)
.CHR Character or Font File
.CHS Corel WP Chart Style
ATI Radeon Video Driver File
.CHT Cheat Machine Data File
ChartViewer dBase Interface File
Harvard Graphics Vector File (Harvard Graphics taken over by Serif)
ChartFX Template File
.CI CitectSCADA File
.CIF Ventura Chapter Information
CalTech Intermediate Graphic
Easy CD Creator Image
pcAnywhere Caller File
Ventura Converted Image File
Colombo Ipermedia File
Chip Layout Information
Crystallographic Information File
.CIL Clip Gallery Download Package
.CIM Sim City 200 File
CompuApps Drive Backup Image
CIMEX Cimpack Design Drawing File
.CIN OS/2 Change Control File
Cinetitler Digital Screen Subtitling
Kodak Cineon [XnView]
.CIP Ghost Keylogger File
.CIR SuperMax E-CAD Save-File Command
PSpice File
Flash Color Table
.CIS CheckInbox File
.CIT Intergraph Scanned Image [XnView]
.CIX TCU Turbo C Utilities Database Index
.CK1 iD/Apogee Commander Keen 1 Data File (.CK1 to .CK6)
.CKB Borland C++ Keyboard Mapping File
.CKD CADKEY GraphX File Format (ver 2 and above)
.CKP Ingres Checkpoint File
.CKT Crocodile Clips (Electronic design/physics)
.CL Generic LISP Source Code
.CL3 Easy CD Creator Layout File
.CL4 Easy CD Creator Layout File
.CL5 Easy CD Creator Layout File
.CLA Java Class File (usually .CLASS but can be shortened)
CLARION for DOS
.CLASS Java Class File
.CLB ICQ Contact List
MS Office XP Developer Code Librarian
cdrLabel Compact Disc Label
.CLF ListPro File
.CLG Disk Catalog Database
Maxagrid CTM Log File (text format)
.CLK Corel R.A.V.E. Animation File
.CLL Crick Software Clicker File
OzWin CompuServe E-mail/Forum Access Custom Library Search
.CLO Cloe Ray-Tracer [XnView]
.CLOE Cloe Ray-Tracer [XnView]
.CLP Windows Clipboard/Picture [IrfanView]
Quattro Pro Clip Art
CLIPS/wxCILPS File (C Language Integrated Production System)
Clipper 5 Compiler Script
PC Paint/Pictor Page [XnView]
GoDot [XnView]
.CLR WinEdit Colorization Word List
1st Reader Binary Color Screen Image
PhotStyler Color Definition
FileMaker Spelling Dictionary
.CLS Visual Basic Class Module
C++ Class Definition
.CLV Aladdin Knowledge Systems Vbox Current Language File (software distribution)
.CLW Microsoft Visual C++ Class Wizard File
CLARION Magazine Database (DOS & Windows)
.CM Craftman Data File
.CM2 Curious Labs Poser Camera File
.CM4 ClipMate Data File
.CMA Applix TM1 Database File (text)
.CMB Chromeleon Backup Archive
.CMC PowerFront File (part of ShopMind)
.CMD OS/2, WinNT Command File
DOS CP/M Command File
dBase II Program File
1st Reader External Command Menu
.CMF Creative Music File
Corel Metafile
.CMG Chessmaster Saved Game
.CMK Card Shop Plus File
.CML Cheat Machine Library File (Windows)
PADGen Company Info File
.CMM CEnvi (ScriptEase:Desktop) Batch File
.CMO Virtools Behavioral Server Composition
.CMP Leadview Bitmap
Discorp CMP Image [XnView]
Open Access File
Address Document
JPEG Bitmap
CorelDRAW Postscript Printer Header
Route 66 Address Document
MS Word for DOS User Dictionary
.CMQ Culturemetrics (Personality Profile Analyser)
.CMR MediaPlayer Movie
.CMT Culturemetrics (Personality Profile Analyser)
Chinon ES-1000 Digital Camera [XnView]
.CMU Carnegie Mellon Univeristy Stereo Raster Image
CMU Window Manager [XnView]
.CMV Corel Move Animation
.CMW MS Custom Maintenance Wizard File
COM-Watch (data analyser)
.CMX Corel PhotoPaint Image [XnView]
Corel Presentation Exchange Image [XnView]
The Sims (Maxis) 3D Body Mesh Data
Apple Viewer File
.CNC CNC General Program Data
Click 'n Create File
.CND ControlDraw File
Embroidery Design File [possibly read with Melco Sizer Software]
.CNF Configuration (various)
SpeedDial
.CNM Windows Application Menu Options and Setup File
.CNQ Compuworks Design Shop File
.CNREG EULANDA® Warenwirtschaft (ERP) Configuration Information
.CNREP EULANDA® ERP System Report Template
.CNS W2K Client Connection Manager Export File
.CNT Help File Contents (and other contents needs)
.CNV MS Word Data Conversion File
WS_FTP Pro Upload Conversion File Data
WordPerfect Temporary File
Canvas versions 6, 7, 8
.CO Cult3D ActiveX Player Application
.COB COBOL Program File
Caligari Truespace Format
TrueSpace2 Object
.COD Code List
Compiler Program Code
.COD Multiplan Data File
dBase Template Source File
SWAT Input Control File (river basin scale model)
FORTRAN Compiled Code [FORTRAN]
Video Text File
.COK Carmageddon Patch File
.COL Autodesk Color Palette
Multiplan Spreadsheet
Lotus Notes Import Column Description File
.COM Command (Executable file)
.COMPAT Likely a text file (e.g., README.COMPAT)
.CON Knowledgeware Consolidation File
Tree Professional Conifer Creator File
Simdir Configuration File
.CONF IRC Related Configuration File (IRCDs or EggDrops)
Linux Configuration File (also UNIX)
.CONFIG MS .NET Application Configuration Information
.COO Fabasoft Components
.COP Tree Professional Conifer Creator Image File
.COR Protein Structure File
Web GPS Correction Server Export File
WMOVIEC Input File
.COS Scarlett Expert System Compiler Query File (Scarlett is not presently available)
.COV Fax Cover Page (Win2000 Cover Page Editor)
.CP CompuMedic Database (medical billing software)
.CP8 CP8 256 Gray Scale Image [XnView]
.CPA Colasoft Capsa (network sniffer)
.CPD Fax Coversheet
Corel PrintOffice File
Complaints Desk Script
.CPE Fax Coversheet
.CPF Complete Fax File
.CPG 3dize® Cool Page File
.CPH Corel Print House Image
.CPI Code Page Information
ColorLab Image
Calamus [XnView]
.CPJ CeQuadrant CD Project
Commotion File (compositing software tool)
.CPL Control Panel Extension
Corel Color Palette
Compel Presentation
.CPN Age of Empires II Campaign File
.CPO Corel Print House File
.CPP Borland C++ Builder 6
CA-Cricket Presents Presentation
Maya File
.CPR Corel Presents Presentation
Knowledge Access Graphics
INMOS Transputer Development System Occam Program Code Fold
.CPS Antivirus Checksum File
Central Point PC Tools Backup
Colored PostScript File
Classroom Performance System File
.CPT Macintosh Compressed File
Corel Photo-Paint Image [XnView] [IrfanView]
Jasc After Shot
dBase Encrypted Memo
CA Cricket Presents Template
.CPT6 Corel Photo-Paint Image [IrfanView]
.CPX Control Panel Applet
Code Page Translation File
CryptaPix Encrypted Image
Corel Presentation Exchange Compressed Drawing
.CPY Copy Books Data File
Atari Ramdrive CPY Commands
Flexus COBOL Definitions (function, element and value properties associated with a control)
.CPZ COMPOZ Music Text
.CR CRiSP Source Code
.CR2 Curious Labs Poser Character File
.CR4 STABCAL (stability calculation for aqueous systems) File
.CR7 STABCAL (stability calculation for aqueous systems) File
.CRA Personal Craft Factory File (no longer supported--GraphicCorp bought by Corel)
.CRD Cardfile (Windows 3.x Database)
Guitar Chord File [On-line Guitar Archive] (Usually an ASCII text file)
.CRF Zortech C++ Cross-Reference File
Database Cross-Reference File
OM2Cipher Recipient File
Sierra Print Artist Craft
System Shock 2 Archive [Dragon UnPACKer]
Thief 2: The Metal Age Archive [Dragon UnPACKer]
Thief: The Dark Project Archive [Dragon UnPACKer]
.CRG Calamus [XnView]
.CRH MS Golf Image File
Links Games Course File
.CRK Crack File (differences between original and cracked files) [Need proper version of CRK.EXE to open]
.CRL Certificate Revocation List
.CRM Capital Research Vendor Bid System
.CRP dBase Encrypted Database
Visual dBASE Custom Report
Corel Presents Run-Time Presentation
.CRS WordPerfect 5.1 for Windows File Conversion Resource
Links Games Course File
Gold Game Course File
.CRT Certificate File
Oracle Terminal Settings Info
UNIX Crontab File (not a required extension for Crontab)
.CRU CRUSH Compressed Archive
.CRW Canon Raw Format (Image) [XnView] [ACDSee 4.0]
.CRX Links Games Course File
.CRY Crypto Chat II Encrypted Notebook-content
.CRZ Links Games Course File
.CS C#.NET Source File
.CSA Comma Deliminated Text
Ultimate Ride Roller Coaster
.CSB Corel Photo-Paint Script
CircuitSoft Viewer (a module of EMSI Complete) - (Unverified)
.CSC Corel Script
.CSD Bitstream Fontware File
Chemsoft® MSDS Database File
Embroidery Design File [possibly read with Melco Sizer Software]
.CSF Van Dyke's CRT/SecureCRT Script File
GeoMedia Coordinate System File
.CSG Statistica Graph File
.CSH Hamilton Labs C Shell Script File
.CSI Cyberautograph Signed Item
.CSK Claris Works
.CSM Borland C++ Symbol File
Borland C++ 4.5 Precompiled Header
Kodak DC265 Camera Script
.CSN Dreamweaver MX's Snippet
.CSP PC Emcee On-Screen Image
CaseWare Working Papers Script Page
.CSQ Foxpro Queries
.CSS Hypertext Cascading Style Sheet
Stats+ Datafile
Statistica Datasheet
.CST Macromedia Director Cast File
.CSV Comma-Separated Variables
CompuShow Adjusted EGA/VGA Palette
.CT Scitex CT Handshake Bitmap [XnView]
Iris CT Graphic [XnView]
.CT0 Maxagrid CTM File Being Processed (text format)
.CT1 Maxagrid CTM File Successfully Processed (text format)
.CT2 Maxagrid CTM File Unsuccessfully Processed (text format)
.CTB NoteTab Clipbar
.CTC PC Installer Control
.CTD Cobra Track Dump (COmBined Reconstruction for Atlas)
Cardtable File (text file)
Marine Data File (e.g., automatic float data)
Simpsons Cartoon Studio Export File
.CTF TIFF Compressed File
WhereIsIt Catalog
Symphony Character Code Translation
MGI PhotoSuite 1.0/8.0 Album File
Calculator Text Format
.CTG Cartridge Definition File
ChessBase Opening Book
Canon Powershot Pro 70 Info File
.CTL Setup Information (various)
User Control (various)
.CTM FreeBSD Content Management File
Java Charge Transaction Matrix File
Crazytalk Talking Animation File
Maxagrid CTM File (text format)
SDR99 Speech Recognition Task Time Marked Conversation Input
Content Delivery Service (Web site pending as of Feb 2002)
.CTP American Greetings Greeting Cards
ChemDraw Template
.CTT Hotmail List of E-mail Contacts
LabView File
.CTX Compressed Text
Visual Basic User Control Binary File
Pretty Good Privacy (PGP) Ciphertext File
MS Online Course Text
Chinese Character Input File
.CTY SimCity City File
.CUB OLAP Cube File (definition for SQL Server, any OLE DB, or ODBC-compliant database)
.CUE MS Cue Cards Data
Description File for a CD-Image [Fireburner.com or Goldenhawk.com] or [Fantom CD Emulator]
.CUF Turbo C Utilities Form Definition
.CUL IconForge/ImageForge Cursor Library
.CUP OzWin CompuServe E-mail/Forum Access Catalog Library Update
.CUR Cursor Microangelo [IrfanView]
.CURSOR Sun Icon/Cursor [XnView]
.CURXPTHEME Cursor XP File (changes look & function of mouse cursor)
.CUT Dr. Halo Bitmap Graphic [XnView]
INMOS Transputer Development System Occam Utility Package
Utilitaires (multiple utilities)
.CV Corel Versions Archive
MS CodeView Information
.CV4 Codeview Colors
.CV5 Canvas version 5
.CVA Compaq Diagnostics
.CVG Image File
.CVP WinFax Cover Page
Portrait [XnView]
.CVR WinFax Cover Sheet
ElectraSoft Fax Cover Sheet
.CVS Canvas Drawing File
Outlook Express File
Sound File [Linux Player]
.CVT dBase Converted Database
.CVW Codeview Colors
.CW3 Crossword Construction Kit Puzzle Group
Claris Works Win 3 Document (now Filemaker)
Chem Draw Molecular Structure (Lewis structures, orbitals and lab apparatuses)
.CWB WebNote Document
.CWD StarDraft CWAD File (StarCraft Editor)
.CWE Crossword Express
.CWK Claris Works Data also see AppleWorks
.CWS Claris Works Template also see AppleWorks
.CWW Crossword Weaver File
.CXE Common XML Envelope
.CXT Macromedia Director Protected Cast File
Vegas Jackpot Gold Game Data File
.CXX Zortech C++ Program
.CYN Cynex Root55 Program Extension
.CYP Cypherus Encrypted Archive
.??_ Files ending in "_" are often compressed install files of the same
name (e.g., .EX_ expands to .EXE, .DL_ expands to .DLL, etc.)
.D Dialect Source Code File
D Programming Language Source Code File
.D_1 Polytext Ma'archot Meida Co. S"TaM ("Sifriyah Toranit M'muchshevet" - Computerized Torah Library)
.D_3 Polytext Ma'archot Meida Co. S"TaM ("Sifriyah Toranit M'muchshevet" - Computerized Torah Library)
.D$W MindStor Driver (digital wallet)
.D00 Ganbatte! Winamp Plug-in
.D01 Ganbatte! Winamp Plug-in
Note: .D00 and .D01 formats created by Jens-Christian Huus
of the Vibrants and contains OPL2 music data.
.D11 Macro Mania Data File
.D2D 3D Fassade Plus 2D/3D Object File
.D2I Shadowmaster Diablo II LOD Character Editor File
.D2S Diablo II Character and Equipment File
.D2V DVD Ripper File
.D3D CorelDream 3D File
Direct3D File
.D3F MS MechCommander 2 Encyclopedia
.D64 Commodore 64 Emulator Disk Image
.D8A AmBiz Productivity Pak Catalog
.DAD Chromeleon Channel Raw Data
.DAF OM2 911 Xchange Version 3 & 6 Document
.DAN ATI Radeon Video Driver File
.DAO Windows Registry Backup
IsoBuster File
.DAP Omnis5 Application File
MS Access Data Access Page [Buy Office XP at Shop.Microsoft]
.DARBY TheWord & Bible Companion Darby's Bible Translation Bible
.DAT Data (multiple programs)
Note: RDXR020305.DAT is Morpheus adware. Kill this and others with Ad-aware.
WordPerfect Merge Data
(also possibly) MPEG File
Mitsubishi DJ-1000 and Photorun Native Format
Gunlok Archive [Dragon UnPACKer]
Nascar Racing Archive [Dragon UnPACKer]
SPOT Graphic [XnView]
SHARP MZ-series Emulator RAM-Disk File
.DAWN Experimental File Format (.DAWN)
.DAZ Poser 3D File
.DB Paradox Database
Progress Database
Solid Database
WindowsXP Thumbnail Database
ANSYS Database
SmartWare Office Pac File (requires login)
Oracle Database
.DB$ dBASE Temporary File
Clarion Modula-2 Debug Info
.DB2 dBase II File
.DB3 dBASE III File
.DBA DataEase Data File
DarkBASIC File
.DBB ANSYS Database Backup
Mopheus Music File
.DBC MS Visual Foxpro Database Container
PROGNOSIS Database Collection Document File
.DBD Clarion Modula-2 Debug Info
Business Insight Data
Oracle Record Type
.DBF Database (multiple programs) [started as dBASE] [File Structure]
Oracle 8.x Tablespace File
ArcView Shape File (GIS-related file)
.DBG MS C++ Symbolic Debugging Info
Oracle Generator File
.DBI Photo Soap2 File
.DBK dBase Database Backup
Orcad Schematic Capture Backup File
.DBL WindowsXP Product Activation File (if on WPA.DBL in the System32 folder)
.DBM Cold Fusion Template
DataBoss Menu Template
DataEase Data File
OzWin CompuServe E-mail/Forum Access SYSOP File
.DBO dBase IV Compiled Program File
.DBOOK Pocket Diary Text
.DBQ Paradox Memo
.DBR Comdial VMMI Database
.DBS SQL Format Database
Word Printer Description File
.DBT Database Text File [dBASE] [File Structure]
Oracle Template
Foxbase Memo
.DBV Flexfile Memo Field File
.DBW DataBoss Database File
.DBX Database (multiple programs)
DataBeam Image
MS Visual Foxpro Table
.DC DesignCAD CAD File
.DC2 DesignCAD CAD File
Kodak DC25 Digital Camera File
DC2-PC Motion Control Command Language File
.DC5 DataCAD Drawing File
.DCA Visual Basic Active Designer Cache
IBM DisplayWrite Document Content Architecture Text File
D-PAS Portfolio Manager File [Education about D-PAS]
.DCB Concordance Database Control Block
.DCD Document Content Description File
FORTRAN Data File [FORTRAN]
INMOS Transputer Development System Occam Object Code
.DCF Design Rule for Camera File Systems File
DynSite Configuration File
Dyadic Data File
Disk Image File
.DCL DumpSec
DesignComposer Addition to Layout Knowledge Base
.DCLST DC and DC++ Direct Connect [File sharing network using DC++]
.DCM DCM Module Format
Dicom [XnView]
.DCP Delphi Compiled Packages
OS/2 Data CodePage
.DCR Shockwave File
Kodak Proprietary Image Format
.DCS Quark Desktop Color Separation Specification
ACT! Activity Data File
.DCT Dictionary (various)
MS Visual Foxpro Database Container
.DCU Delphi Compiled Unit
.DCV DriveCrypt Volume
.DCW Draft Choice for Windows
.DCX FAX Image [IrfanView]
ElectraSoft Fax
PC-Paintbrush File [SwiftView]
Bitmap Graphics [IrfanView]
Macros
MS Visual Foxpro Database Container
.DD Macintosh Compressed Disk Doubler Archive
C64 Doodle [XnView]
.DDB Device-Dependent Bitmap Graphics File
Design Database File (database definition file) [MS Access???]
INMOS Transputer Development System Occam Debugging Info
Protel 99SE Design Database File
.DDATA Pocket Diary Text File
.DDE Dynamic Data Exchange
.DDF BTRIEVE Data Dictionary File (allows other programs to access data)
Bitstream Fontware File
Doom Definition File
Music Library File
.DDI DiskDupe Image
Disk Doubler Image
.DDL MS Data Definition Language File (SQL Server Query Analyzer)
.DDM Intelliware Data Modeller (Data Mapping and Aliasing)
.DDP OS/2 Device Driver Profile File
Delphi 6 File
.DDS INMOS Transputer Development System Occam Compiler Descriptor
Photoshop Compressed Textures
.DDX Juno "Get" File
Device Data Exchange Format File (text CAD design exchange format)
.DDW CSPro File (combined IMPS and ISSA Census Processing System)
.DE MetaProducts Download Express Incompletely Downloaded File
.DEB DOS Debug Script
Debian Linux Package
.DEC VersaPro Declaration File
.DESK Card Deck File
.DESKLINK MS Windows Explorer Desktop Controls
.DEF Definitions
Defaults
SGML Tag Definition
Modula-2 Definition Module File
SmartWare II Data File
C++ Definition
3D Fassade Plus Define Module File
Geoworks Assembly Header File
.DEI Gerber Design Engineered Interface
.DEL Data
.DEM Descent Demonstration
USGS Map
Digital Elevation Model File (GIS-related file)
Half-life Game File
.DEP Setup Wizard Dependency
.DEPLOY DeployMaster Setup Script
.DER Certificate File
.DES Description Text
Tribes 2 Game File
Quickbooks Template
Pro/DESKTOP File
Interscope BlackBox File (encryption program)
.DEU ATI Radeon Video Driver File
.DEV Device Driver
Device Independent TeX
LaTeX File
.DEX WinGlucofacts File (diabetes management software)
.DEZ DES Encrypted Zip File
.DF Lightscape Parameters
.DF1 Omnis7 and Omnis Studio Database File (also .DF2, .DF3, etc.)
.DFC Voicemail File (Trio Voice Communications and maybe others)
.DFD File Flow Diagram Graphic
.DFF Digital Animation Format
Grand Theft Auto 3 Export Format
.DFI Digifont Outline Font Description
.DFL Signature Default Program Settings
.DFM Borland C++ Builder 6 Form
Borland Delphi Form
File Flow Diagram Model
.DFP Stabilogram Diffusion Analysis File (Requires MatLab)
Digital Fusion Plug-in
.DFS Delight Sound File
.DFT Fakt2000 File
SolidEdge CAD File
Workshare Synergy File
PC Draft File
.DFV Word Print Format Template [Buy Office XP at Shop.Microsoft]
.DG Autotrol Graphics
.DGC TurboTax-related File
.DGK Delcam Powershape/Powermill (3D CAD)
.DGN Microstation CAD Drawing File
Intergraph Graphics
Dragon 32 Emulator
.DGO Dimitrius Settings File (Dimitrius is program author)
.DGR Fax Page (MS Outlook Express)
DART Pro 98 File Group Details
Keeptool ER Diagrammer
.DGS AT Advanced Diagnostics File
.DH Geoworks Dependency Information File
.DHE MS Help Workshop Dialog Box Help Editor Document
.DHP Dr. Halo PIC
.DHT Gauss Data File
.DIA Computer Support Corp Diagraph Graphics File
DIA Drawing
.DIB Device-Independent Bitmap Graphic [IrfanView]
.DIC Dictionary (various)
.DIF Data Interchange Format
DIFF Command Output (patch script)
.DIG Text Document
Digilink Format
Sound Designer Audio File
.DIL DesignComposer Input DIL Script
.DIN DataEase File
ADC Labs eWave File (broadcast automation software)
.DIP Graphics File
.DIR Procomm Plus Dialing Directory
Macromedia Director File
DEC VAX Directory
Worms Armageddon Archive [Dragon UnPACKer]
.DIS DKB Ray Tracer File [XnView]
DATAIR Data Import Specification Layout File
VAX Mail Distribution File
Corel Draw Thesaurus
.DISCO MS .NET Web Service Discovery File
.DIT MS Win2000 Active Directory Schema
.DIVX Movie Encoded with DivX-codec
.DIZ Description In Zip File
.DJE MattBatt iAM-player
.DJV DjVu File [XnView]
.DJVU DjVu File [XnView]
.DKB DKBTrace Ray-Traced Graphics File
.DL Animation File (this appears to be associated with glifomon.zip, a probable porno file)
Masked .DLL File (often used by malware to hide .DLL files from virus scanners [e.g., Sub7])
.DL_ Compressed .DLL File in an Install Archive
.DL4 Lindab Dimsilencer File
.DLC Echelon HQ Configuration File
Model Dislocation File
3D Studio Max Animation Controller File (Character Studio)
.DLD Lotus File
.DLE Macromedia Designer 3D Translator File (Also 3D Studio Max)
.DLF Belkin Router Firmware Update
.DLG Dialog Resource Script
C++ Dialogue Script
Infinity Engine Game Dialog File
Digital Line Graph (U.S. Geological Survey geographic database)
.DLK INMOS Transputer Development System Occam Compiler Link Info
.DLL Dynamic Link Library
CorelDraw Export/Import Filter
.DLM Dirty Little Helper Cheat File
Dynamic Link Module
ASCII Delimited File (sometimes used in voting systems)
3D Studio Max Character Studio
.DLS Downloadable Sounds (Interactive Music Architecture)
Norton DiskLock Setup File
ADAPTA DLS/32 Supply Chain Planning (ASCII file with general number data)
dataLive Database Engine File
.DLU Dirty Little Helper Update File
.DM2 Quake 2 Demo File [Viewer]
.DM3 Quake 3 Arena Demo File [Viewer]
.DM_48 Quake 3 Arena Demo File [Viewer]
.DM_57 Return to Castle Wolfenstein Demo File [Download site]
.DM_59 Return to Castle Wolfenstein Demo File [Download site]
.DM_66 Quake 3 Arena Demo File [Viewer]
.DM_67 Quake 3 Arena Demo File [Viewer]
.DMC Medical Manager DML System Compiled Script
.DMD Visual dBASE Data Module
dB2K/dQuery Web DataModule
OS/2 Warp Device Manager Driver
.DME Medical Manager DML System Data Merge
.DMF Delusion/XTracker Digital Music File
Packed Amiga Disk Image
.DMG Macintosh OS X Disk Image File (Treated like a real disk)
.DMK Digimask File (3D human faces)
.DML Darn! Shopping! Mall File
Medical Manager DML System Script
.DMO Derive Demo
.DMP Dump (various)
INMOS Transputer Development System Occam Core Dump
.DMS Amiga DISKMASHER Compressed Archive (see ADF) [Amiga Forever]
.DMT Delcam Machining Triangles (3D CAD)
.DMX Medical Manager DML System Index for Custom .DME Files
ProTrader Database
.DN8 Blue Martini UTF-8 Encoded DNA File (eCRM)
.DNA Blue Martini DNA File (eCRM)
.DNA.XML Blue Martini XDNA File (eCRM)
.DNC Machine Tool Communications
.DND ClustaW Tree File
.DNE Darn v5+ (Windows) Events List
Netica Bayes Net File
.DNG Dungeon File (created by ID software)
.DNI realMyst 3D Archive [Dragon UnPACKer]
.DNL DigitalWebBook Electronic Book (requires installation of DigitalWebBook plug-in)
netMod Modem Firmware Upgrade File
.DNS DynSite Plug-in File
.DO Stata Batch Analysis File
DigitalOutrage Hosting Control Panel Info
.DOB User Document Form File
.DOC Document or Documentation (many programs/formats)
MS Word Document [Buy Office XP at Shop.Microsoft]
DisplayWrite 4 File
.DOCHTML MS Word HTML Document [Buy Office XP at Shop.Microsoft]
.DOCMHTML MS Word HTML Document [Buy Office XP at Shop.Microsoft]
.DOF Racer 3D Geometry File
.DOG Laughing Dog Screen Saver
.DOH Geoworks Dependency Information File
.DOL D-PAS Portfolio Manager Flexible Benchmarking Analysis File [Education about D-PAS]
.DOO Atari Doodle [XnView]
.DOP Digital Orchestrator File
.DOQ Digital Orthophoto Quadrangle (digital aerial photo)
.DOQQ Digital Orthophoto Quarter Quadrangle (smaller digital aerial photo)
.DOS Text File/DOS Specification Info
1st Reader External Command File
Network Driver File
.DOT MS Word Document Template [Buy Office XP at Shop.Microsoft]
Corel Lines-Definition
.DOTHTML MS Word HTML Document Template [Buy Office XP at Shop.Microsoft]
.DOX Text File
MultiMate Document
User Document Binary Form File
.DOZ VENDINFO Description Out of Zip File
.DP Daily Planner Calendar File
DataPhile Data File
.DPA Serif DrawPlus Animation
.DPC DiscPlay Collection File
Delphi Package Collection File
.DPJ DeskProto CAM Project File
.DPK Delphi Package File
.DPL Borland Delphi 3 Packed Library
Digital Photo Librarian Database
.DPP Serif DrawPlus Drawing
.DPR Borland C++ (or Delphi) Default Project
.DPS DivX XP Skin (.ZIP file format)
.DPT Publish-It! Publication File
.DPX Digital Moving Picture Exchange [XnView]
.DPY Realpolitik Saved Game
PROGNOSIS Display Document File
.DQA itaz doQument File
.DQB D-PAS Portfolio Manager File [Education about D-PAS]
.DQD itaz Default doQument Database
.DQY MS Excel ODBC Query File [Buy Office XP at Shop.Microsoft]
.DR9 Directory File
.DRC Orcad Schematic Capture Design Rules Check Report File
DriveCrypt Container File (Note: This extension was changed to .DCV due to a WinXP conflict.)
Borland Delphi Compiled Resource File
.DRES Diagnosis Results
.DRJ Deraj Data File
.DRL DocObject Resource Locator
.DRM Steinberg Cubase Drum File
.DRN Darn for DOS
.DRS WordPerfect Driver Resource
Age of Empires 2 Archive [Dragon UnPACKer]
.DRV Device Driver
.DRW Drawing (various)
Micrografx Vector Graphic
Pro/E Drawing
.DRX Adobe Photoshop Tutorial
.DRZ Draz Paint [XnView]
.DS Chemisty Software
PhotoMax Drive
HP Officejet T Series All-in-One TWAIN File
.DS4 Micrografx Designer Graphics (ver 4)
.DSA DasyTec DASYLab File
.DSB DasyTec DASYLab File
.DSC Oracle Discard File
Nikon Coolpix Disk Identification File
dpkg-source (info needed help unpack Debian source archives)
.DSCE Diagnosis Scenario
.DSD DataShaper Database File
Document Structure Definition File
.DSES Diagnosis Session
.DSF Micrografx Designer
PC-TRUST Document Signer (Extension means file is signed)
Delusion/XTracker Digital Sample
.DSG Doom Saved Game
.DSH Dashboard PDA Wallpaper
.DSI Digital Sound Module Tracker Format (unverified)
R-Studio Hard Disk Scan Results File
.DSK Borland C++ or Turbo Pascal Project Desktop File
Novell Driver File
Lotus Notes Design Elements
SHARP MZ-series Emulator File
.DSL Lingvo User Feature Dictionary
.DSM Delphi Symbol File
Digital Sound Module Tracker Format
Dynamic Studio Music Module
.DSN ODBC Data Source
SureThing Office Labeler (formerly DesignExpress) Document
Object System Designer Design
Orcad Schematic Capture Schematic File
.DSP Signature Display Parameters
Dr. Halo Graphic Screen Driver
MS Developer Studio Project
.DSQ Corel QUERY File
DASYLab Worksheet Sequence
.DSR WordPerfect Driver
Active Designer File
.DSRES MS Dungeon Siege Texture File
.DSS Digital Soup Digital Sound File
DCC Active Designer File
Digital Speech Standard File (Voice Recorders & IBM's ViaVoice)
.DSST ConsumerPoint File (CACR Marketing)
.DST PC-RDist Distribution File
Embroidery Machine Stitch File (VeePro) [possibly read with Melco Sizer Software]
.DSW MS Developer Studio Workspace
Borland C++ Desktop Settings
.DSX Active Designer Binary File
.DSY PC Draft Symbol Library
.DSZ Embroidery Machine Stitch File (VeePro)
.DT_ Macintosh Data File Fork
.DTA Data (Various)
Stata Binary Saved Datasets
Hidden & Dangerous Archive [Dragon UnPACKer]
.DTB DesignTools PCB Design and Make (printed circuit design - common in UK schools)
.DTD SGML Document Definition File
DesignTools 2D Design (vector drawing - common in UK schools)
.DTEA Diagnosis Template Archive
.DTF Q&A Database
MS Exchange Header File (Used when sending to Lotus Notes)
.DTL Hal/Supernova/Lunar/LunarPlus Screen Readers/Magnifiers
.DTM DigiTrekker Module
Softshare Delta Translation Map
.DTP SecurDesk! Desktop
Timeworks Publisher Text Document
Publish-It! Publication
Pressworks Template File
.DTQ Database Tools Query
.DTS Digital Surround Audio File Format
MS Data Transformation Services (Data Transformation Packages used by MS SQL Server)
.DTX LaTeX Source and Documentation Archive
E-Book File
DocuTech Print6 Engine File (Prints DocuTech Closing Documents)
LithTech Model Texture File
.DUN Dial-Up Network
.DUP Duplicate Backup
.DUS Readiris Font Dictionary
.DV DESQview Script
Digital Video File
.DVB Visual Basic for Applications Macro Project
.DVC Lotus File
.DVF DV Studio Camcorder Graphics File
.DVI TeX Device Independent Document
.DVP DESQview Program Information
AutoCAD Device Parameter
.DVR Device Driver
.DW2 DesignCAD Drawing File
.DWC Compressed Archive
.DWD DiamondWare Digitized File
.DWF Autodesk WHIP! Drawing Web File
MS WHIP autoCAD REader Drawing Web File
.DWG AutoCAD Drawing Database
Drafix Drawing
.DWI Dance With Intensity (dance simulator)
.DWK Locked DWG File
.DWN Cisco Download File (usually a system update)
Firmware Update File (several)
Experimental File Format (.DAWN)
.DWP Dweep Game Levels
DeScribe Document File
.DWS Dyadic Workspace File
AutoCAD Standartization File
.DWT AutoCAD Template/Prototype File
Macromedia Dreamweaver Template File
Demon's World Game Texture File
.DWY Dwyco Video Clip
.DX Document Imaging File
Digital Electric Corporation (DEC) Data Exchange File
Deus Ex File
.DXB Drawing Interchange Binary
.DXF AutoCAD Drawing Interchange Format
.DXL Dapyx MP3 Explorer (MP3 database organizer)
DOORS Extension Language
.DXMAX Oozic File
.DXN Fujitsu dexNet Fax Document
.DXPACK DesktopX Object (customizes the Windows Desktop)
.DXR Vegas Jackpot Gold Game File
.DXTHEME DesktopX Theme File (customizes the Windows Desktop)
.DXR Macromedia Director Protected Movie File
Dependable Strengths Administrator Resources (Macintosh)
Green Building Advisor File
.DYN Lotus File
.DZ Dzip Compressed File
.??_ Files ending in "_" are often compressed install files of the same
name (e.g., .EX_ expands to .EXE, .DL_ expands to .DLL, etc.)
.E Specman Testbench E-program Source File
.E00 ArcInfo Coverage Export File (GIS-related text file)
.E01 Encase Forensic Software
.E2 thinkdesign CAD Design
.E3 thinkdesign CAD Design
.E48 Emu48 HP48 Emulator File
.E78 IBM 3270 Terminal Emulator Screen Layout Definition
.EAC EmEditor Auto Completion File
.EAF Aframe File (suite of generic testing and assessment software)
MicroEmacs Abbreviation File Format
FRAGSTATS*ARC File (Landscape Structure/Spatial Pattern Analysis for ARC/INFO)
.EAL Enfocus Action List
.EAR Java Enterprise Application Packaging Unit
.EAS Elite Visual Basic API Spy (Use care entering this site)
.EAZ Express Assist File
.EBF Pocket PC WindowsCE Form File
EARS Definition Backup (EARS = UK Liberal Democrats Election Agents Record System)
.EBJ Geoworks Error Checking Object File
.EBK EARS Database Backup (EARS = UK Liberal Democrats Election Agents Record System)
.EBO Microsoft Reader Ebook Format
.EBP Pocket PC WindowsCE Project File
.EBS WindowsXP Scanner File
.EBX Electronic Book Exchange (Open Source) [Adobe reader]
.ECA electroCAD File
.ECC Ecchi Role-playing Format (Generally X-rated Anime File) [XnView]
.ECF WinFax Office Add-in File
MS Outlook Add-in File
.ECO NetManage ECCO File [Alternate site]
.ECR Ecrypt E-mail File
.ECS Encrypted Compressed GIS Software Geographic Shape File [GIS info]
(ArcView, et.al.) (JShape/FShape)
.ECW Ensoniq Waveset Format
EclipseCrossword Crossword Puzzle
Enhanced Compressed Wavelet [XnView]
.ECW2002PUZZLE EclipseCrossword Puzzle
.ECW2002WORDS EclipseCrossword Word List
.ED EasyDraw CAD File (Japanese CAD program)
.ED5 EDMICS Graphics File
.ED6 EDMICS Graphics File
.EDA Ensoniq ASR Disk Image
.EDB ROOTS3 Geneological Data
.EDC Kryptel (light) Decoder/Encoder
.EDD FrameMaker Element Definition Document
.EDE Ensoniq EPS Disk Image
.EDF Workshare Synergy Document Change Management
.EDK Ensoniq KT Disk Image
.EDL Edit Decision List (management for video and film post production)
.EDM CAD Contouring Parameter Data File
Extinction Corrected Differential Photometry
.EDML Dreamweaver MX Extension File
.EDN EDIF Netlist File (Xilinx ISE FPGA Compiler)
.EDP Attachmate Extra! Session
.EDQ Ensoniq SQ1/SQ2/KS32 Disk Image
.EDS Ensoniq SQ80 Disk Image
.EDT VAX Edt Default Settings
.EDV Ensoniq VFX-SD Disk Image
.EEB WordPerfect Equation Editor Button Bar
EaseBook File (Word add-on for writing books and articles in XML)
.EES Empire Earth Scenario File [SCN Punk Site]
.EFA Ensoniq ASR File
.EFC EFCoins File
.EFD EARS Filter Definition (EARS = UK Liberal Democrats Election Agents Record System)
.EFDEMO Star Trek Voyager Elite Force Demo File [Viewer]
.EFE Ensoniq EPS File
.EFF IEEP TeamBG File (modify Infinity Engine games)
EverQuest Effects File
.EFK Ensoniq KT File
.EFQ Ensoniq SQ1/SQ2/KS32 File
.EFS Ensoniq SQ80 File
.EFT Chiwriter High Res Screen Characters
.EFV Ensoniq VFX-SD File
.EFX eFax.com Fax Document (Used to be JetFax in 1999)
.EGA Ventura EGA Screen Characters
.EGD GIS Software Encrypted Grid Shape File [GIS info]
(ArcView, et.al.) (JShape/FShape)
.EGS GIS Software Encrypted Grid Shape File [GIS info]
(ArcView, et.al.) (JShape/FShape)
.EHTML Enhanced HTML
.EI Electric Image [XnView]
EARS Component File (EARS = UK Liberal Democrats Election Agents Record System) [Filename starts with E]
.EID Faena MyID Encrypted File
IBM ViaVoice Vocabulary File
.EIDI Electric Image [XnView]
.EK5 Simrad EK500 Scientific Echosounder Data [Use Echoview to analyze]
.EK6 Simrad EK60 Scientific Echosounder Data [Use Echoview to analyze]
.EKM EXP: The Scientific Word Processor Macro
.EL eMacs Lisp Source Code
.ELC eMacs Lisp Byte-compiled Source Code
.ELD EARS Label Definition (EARS = UK Liberal Democrats Election Agents Record System)
.ELETTERHEAD Electronic Letterhead
.ELF Black Belt Systems Extended Layer File
Tasklink for Windows Machine Control Executable and Linking Format
.ELG EARS Log (EARS = UK Liberal Democrats Election Agents Record System)
.ELI Encyclopedia Article List
.ELL ATI Radeon Video Driver File
.ELM MS FrontPage Theme-Pack File [Buy Office XP at Shop.Microsoft]
.ELOG McAffee Firewall Log
.ELT Event List Text
.EM1 Emax I Bank File
.EM2 Emax II Bank File
.EMAIL Outlook Express Mail Message [Buy Office XP at Shop.Microsoft]
(Rename to .EML to access in OE but beware of viruses and worms)
.EMB Everest Embedded Bank File
IEMBL Nucleotide Format (MIME type chemical/x-embl-dl-nucleotide)
.EMBL IEMBL Nucleotide Format (MIME type chemical/x-embl-dl-nucleotide)
.EMD ABT Extended Module
.EMF Extended Windows Metafile Format [IrfanView]
.EML MS Outlook Express Electronic Mail [Buy Office XP at Shop.Microsoft]
Note: .EML files with "funny" names in multiple folders implies the Nimda worm.
.EMM EARS Mail Merge Definition (EARS = UK Liberal Democrats Election Agents Record System)
.EMR Emrite (Wordprocessor file)
.EMS PC Tools Enhanced Menu System Config
YoshimuraEMS Motorcycle Fuel Injection
.EMU Emulation
.EMX Enigmacross Puzzle File (Develop professional acrostic puzzles)
Emax System File
.EMY Eericsson Ringtone
.EMZ Windows Compressed Enhanced Metafile (MS graphic format for Office and Visio)
.ENC UUENCODE Encoded File
Video File
BlackIce Evidence Log File
Knowledgeware Encyclopedia
Encore Music File
Dungeon Related File (created by ID software - tied to .DNG file)
.END Corel Arrow Definition
.ENF RightClick-Encrypt File
EndNote Filter File
.ENG Dictionary
Sprint Dictionary Engine File
EnerGrahics Chart Graphics File
.ENL Endnote Library File (for research papers)
.ENR Enroute Toolath
.ENS EndNote Styles File
.ENT Entrust Entelligence Secured File
.ENU ATI Radeon Video Driver File
.ENV WordPerfect Environment
WOPR Enveloper Macro
Acrobat Spelling File
Sierra Print Artist Envelope
The Golem Project Environment File
.ENW Sierra LandDesigner 3D Terrain Modeling
.ENZ EndNote Connection File
.EOT MS WEFT Embedded OpenType File
.EP Bonas Jaquard EP Weave Format File
.EP2 EclipsePackager Package
.EPA Award BIOS Logo [XnView]
.EPD Express Publisher Publication File
EARS Printer Definition (EARS = UK Liberal Democrats Election Agents Record System)
.EPI Express Publisher Document File
EclipsePackager Invoice
EPS Interchange Format [XnView]
.EPL Tallyman E-commerce Software?
.EPP EditPad Pro Project
.EPR Eiffel Project Repository
.EPS Encapsulated PostScript [XnView] [IrfanView]
Ventura Printer Font
.EQL DART Pro 98 Fabric Equalization Presets
.EQN WordPerfect Equation
.ER1 ERWin File
.ERD Entity Relationship Diagram
.ERI Entis Rasterized Image (ERI-chan) [XnView]
.ERM Entity Relationship Diagram Model
.ERP British Economics & Social Research Council Electronic Form
.ERR Error Log (various - many associated with install programs)
.ERS EARS Control File (EARS = UK Liberal Democrats Election Agents Record System)
.ERX ERWin File
.ES EasySIGN Drawing Sheet
.ESF Emblaze Audio File
.ESH Extended Shell Batch File
.ESI Esri Plot File
.ESL MS Visual FoxPro Distributable Support Library
.ESM Enhanced Simplex [XnView]
.ESP Ventura File
ACD/CurveManager Analysis File
Ethos System Analysis File
ACD Analysis File (Advanced Chemistry Development)
E$Planner File
.ESR 4D Database Windows Procedure
.ESS EXP: The Scientific Word Processor Style Sheet
.EST MS Streets & Trips 2001 Trip File
.ESY EmEditor Syntax File
.ET2 Electronic Tax Return Security File (Australian taxes)
.ETA eTreppid Audio File (eTplayer & ETVC media CODEC)
.ETB Seismograph File (compressed?)
.ETC eTreppid Compressed File
Seismograph File
.ETH Ethnograph Document File
.ETM eTreppid Audio File (eTplayer & ETVC media CODEC)
.ETV eTreppid Audio File (eTplayer & ETVC media CODEC)
.ETX SetText Structure Enhanced Text
.EUC Japanese (Kanji)
.EUI Ensoniq EPS Family Compacted Disk Image
.EUK Euklides Dynamic Geometry
.EUM Euklides Dynamic Geometry
.EUS EDonkey2000 Serverlist Tool
.EV EchoView File (sonar fishing data)
EV8 File (Virtual Reality applications)
.EV2 Java File
.EV3 EVERLOCK Options File
.EV6 EV8 File (Virtual Reality applications)
.EVA Viz Modeler 3D Scene Archive (used for TV graphics)
.EVB Embedded Visual Basic File (used on Pocket PCs) [Developer info]
.EVC EchoView Color Scheme (Echocolor-created data)
.EVI EchoView Index File (speed up processing of echosounder data)
.EVK EVERLOCK File
.EVL EchoView Line File (echosounder time/depth coordinates)
.EVR EchoView Region File (echosounder time/depth coordinates)
.EVT PC Tools Event File Scheduler
MS WinNT/2000 Event Viewer Log File
.EVY Envoy Document
.EWB Electronics Workbench
.EWD Express Publisher for Windows Document
.EWL MS Encarta Document
EclipseCrossword Word List
.EWP QuickCog Project File
.EWS QuickCog Sample Set File
.EX EPM Macro File (software install)
Euphoria File (Programming language)
.EX2 PC Doctor File (HP computer - unverified)
.EX3 Harvard Device Driver (Harvard Graphics taken over by Serif)
.EX^ Norton Live Update File
.EX_ Compressed .EXE File in an Install Archive
.EXC QEMM Exclude File
REXX Program
MS Word Exclusion Dictionary [Buy Office XP at Shop.Microsoft]
Text Document
.EXD Control Information Cache
.EXE Executable File
Out-of-process Code Component Used by COM Clients (Component Object Model)
Settlers IV Saved Game
.EXF Fuji EXIF Format File (Any JPEG viewer should view) [File Format (PDF)]
.EXM HP Calculator Executable
.EXP ICQ Saved Chat File
Embroidery Design File [possibly read with Melco Sizer Software]
.EXT Norton Commander Extension File
WS-FTP ASCII Binary Transfer File
E-mail Text Attachment (unverified)
Extinction Corrected Photometry
.EXU Euphoria File (Programming language)
.EXW Euphoria File (Programming language)
.EXX IBM LinkWay MsgPut Intermediate File
.EYB Encyclopedia Yearbook File
.EYE Glass Eye File (stained glass window design)
.EZC EZScreen Screen Saver Editor
.EXF Calculus EZ-Fax Fax
.EZM Text File (From some mailing lists)
.EZP Edify Electronic Workforce Backup Utility
.EZS Sunburst Technology Easy Sheet Document
.EZT Sunburst Technology Easy Sheet Template
.EZX WHAP File
.??_ Files ending in "_" are often compressed install files of the same
name (e.g., .EX_ expands to .EXE, .DL_ expands to .DLL, etc.)
.F Compressed Archive File (UNIX)
FORTRAN Program
Newing-Hall Computer Engraving Software Graphic
.F00 Kanji Font
.F01 Perfect Fax Document
.F06 DOS 6 Pixel Screen Font
.F07 DOS 7 Pixel Screen Font
.F08 DOS 8 Pixel Screen Font
.F09 DOS 9 pixel Screen Font
.F10 DOS 10 Pixel Screen Font
.F11 DOS 11 Pixel Screen Font
.F12 DOS 12 Pixel Screen Font
.F13 DOS 13 Pixel Screen Font
.F14 DOS 14 Pixel Screen Font
.F15 DOS 15 Pixel Screen Font
.F16 DOS 16 Pixel Screen Font
.F2 FLASH BIOS File
.F2R Farandoyle Linear Module Format
.F3 FLASH BIOS File
.F3R Farandoyle Blocked Module Format
.F32 Raw 32-bit IEEE Floating Point Values
.F64 Raw 64-bit IEEE Floating Point Values
.F77 FORTRAN 77 Program
.F90 FORTRAN Program
.F96 Frecom FAX96 Document
.FA EROSION 3D Flow Accumulation [Format (pdf)]
.FA1 DATAIR FAS 87/132 Reporter Data File
.FA2 DATAIR FAS 87/132 Reporter Custom text File
.FAC Usenix FaceServer Graphic [XnView]
.FACE Usenix FaceServer Graphic [XnView]
.FAM Maxis File (unverified)
The Sims Family File
.FAQ Frequently Asked Questions
.FAQT FAQTool XML Contents File
.FAR Farandoyle Tracker Music Module
The Sims (Maxis) Archive File [Dragon UnPACKer]
.FAS 3D Fassade Plus Basic Module
.FAV MS Outlook Bar Shortcuts [Buy Office XP at Shop.Microsoft]
.FAX Fax File (various - often TIFF format) [XnView]
.FBC FamilyTree Compressed Backup File
.FBD F-22 Lightning Advanced Gravis Joystick Control File
Remedy Change Management Flashboard
DART Pro 98 User-definied Complex Restoration Filters
The Quarterback Pro Coverage Worksheet
Honeywell Control Builder File (UMC800 Controllers)
.FBK Navison Financials Backup
FamilyTree Backup File
.FBM Fuzzy Bitmap [XnView]
.FBS File Burner Skin
.FBX 3D Data Exchange Format
.FC Harvard Dictionary (Harvard Graphics taken over by Serif)
.FC2 Curious Labs Poser Face File
.FCB Forest Cover Attribute Processing File
FAAST Builder File
.FCD Virtual CD-ROM
FastCAD/EasyCAD Output
Patton & Patton Flow Charting 3 File
IsoBuster File
.FCF SHELXL93 File (created by LIST 4 command) [contains: h,k,l,Fc^2,Fo^2,sigma(Fo^2)]
Altera MAX+PLUS II File
.FCG Mystic Photo Format
.FCI EROSION 3D Inflow Table [Format (pdf)]
.FCM Forward Compression Binary File Patch
Fluke Networks CableManager File
.FCS Flow Cytometry Standard Format
Fantasy Football League Organizer File
RealProducer Pro Settings
c-tree Server/Plus Data File
Canon Zoom Browser EX File
CD Trustee File
Spectrum Server Log File
.FCT Foxpro Catalog
Campaign Cartographer 2 File
.FCW Campaign Cartographer 2 File
FastCAD File [Viewer]
.FD FORTRAN Declarations [FORTRAN]
Dataflex Field Compiler Offsets
.FDB Navison Financials Database
Legacy Family Tree Database
Art Explosion Portfolio Catalog File
.FDF Adobe Acrobat Forms Document
Format Definition File (used by PC connectivity packages uploading to midrange systems)
.FDI Amiga Disk File (using WinUAE 0.8.17 emulation software) (see ADF) [Amiga Forever]
.FDL XYRO Active Distribution Console File Distribution List
.FDM Floppy Disk Manager File [Software?]
.FDR Final Draft Document File
Embroidery Design File [possibly read with Melco Sizer Software]
.FDW F3 Design and Mapping Document Form
.FDX Force Index
.FEB WordPerfect Figure Editor Button Bar
.FEC U.S. Federal Campaign Expense Submission File [Also FILPAC]
Ferite Programming Language File (http://www.ferite.org is listed but non working)
.FEM CADRE Finite Element Mesh File
.FEP MS WEFT Embedding Project
.FEX Focus File
.FF AGFA CompuGraphics Outline Font Description
Sigmac Source File
.FFA MS Fast Find File
.FFF GUS PnP Bank
defFax Fax Document
Maggi Hairstyles & Cosmetics [XnView]
.FFL MS Fast Find File
PrintMaster Gold Image File
Alien vs Predator Archive [Dragon UnPACKer]
.FFO MS Fast Find File
.FFT DCA/FFT Final Form Text
MS Fast Find File
.FFX MS Fast Find File
.FGA Folder Guard Attributes
.FGD Folder Guard Data
Half-life Modification Map Configuration File (also see .BSP)
Digital Raster Graphic Metadata File
.FGP Folder Guard Passwords File
.FH3 Aldus Freehand 3 Drawing
.FH4 Aldus Freehand 4 Drawing
.FH5 Freehand 5
.FH6 Freehand 6
.FH7 Freehand 7
.FH8 Macromedia Freehand 8
.FH9 Macromedia Freehand 9
.FH10 Macromedia Freehand 10 [Tech note]
.FI FORTRAN Interface File [FORTRAN]
Flash Image [XnView]
.FIC Windev Database System
.FIF Fractal Image Format
FIF (Iterated System) [XnView]
SpinRite Hard Disk Fingerprint File
.FIG REND386/AVRIL Graphic
Super Nintendo Game-console ROM Image [See ZNES or SNES9x]
.FIL dBase Files List Object
WordPerfect Overlay
Application Generator File Template
ACL For Windows Data File (data mining software)
File List (various)
.FIM Construsyc/Instasyc File
.FIN WordPerfect Print Format Text
Perfect Writer Print Formatted Text
ATI Radeon Video Driver File
.FIO ULead Viewer Support File
.FIP FingerPost Information Processor File (REMOTE.FIP is parameter file)
.FIRE FireStarter Project File
.FISH 3d Fish Tank Saved Fish
.FISHES 3d Fish Tank Saved Fishes
.FISHTANK 3d Fish Tank Saved Fishtank
.FIT FITS Graphic (Flexible Image Transport System) [XnView]
MS Windows NT File Index Table
.FITS FITS Graphic (Flexible Image Transport System) [XnView]
.FIX Generic Patch File
.FKY Foxpro Macro
.FLA Macromedia Flash Movie Authoring File
.FLASK FlasKMPEG Language Definition File (ASCII text file)
.FLB Papyrus Format Library
VersaPro Folder Backup
.FLC AutoDesk FLIC Animated Picture [XnView]
FLIC Video (may be same as above)
.FLD Charisma Folder
Hijaak Thumbnail Folder
WinFlash Educator Flashcard Options/Statistics File
VersaPro Folder Contents
3D Fassade Plus Field Define Module File
.FLEX Flexi Data Smoothing (Contact for program)
.FLF Corel Paradox Form
OS/2 Driver File
Navison Financials License File
Firehand Lightning Graphic Collection
.FLH FLIC Animation (DTA)
.FLI Autodesk FLIC Animation [XnView]
EmTeX Font Library
.FLL Foxpro Library
The Sims Floor File
.FLM AutoCAD Film
Medi@Show File
"RealPixel" Animation File (various)
.FLO MicroGrafx FlowCharter File
.FLP Fruityloops Saved File
.FLR Live3D File
The Sims (Maxis) Floor Texture File
.FLS Farrukh Imposition Purlisher Filelist Document
WinFlash Educator Flashcard Source File
.FLT Corel Graphic Filter
StarTrekker Music Module
MulitGen Open Flight File
WinFlash Educator Flashcard Compiled Test File
OS/2 Warp Filter Device Driver
Asymetrix Graphics Filter Support File
Micrografx Picture Publisher Filter
FLIC Animation (DTA)
MS Graphics Filter
FileMaker Filter
CoolEdit Pro Filter [PAF filter]
.FLX FLIC Animation (Tempra Pro, Mathematica, U-Lead, 3DStudio MAX)
Dataflex Ordered Binder
DataFlex Compiled Binary File
.FLZ Medi@Show Data File
WinFlash Educator Flashcard Compiled Study File
.FM Adobe FrameMaker Document
FileMaker Pro Spreadsheet
.FM1 Lotus Spreadsheet File
.FM3 Harvard Device Driver (Harvard Graphics taken over by Serif)
1-2-3 Format File
FileMaker 3 Database Document
.FMB WordPerfect File Manager Button Bar
Oracle Binary Form Source Code
.FMC NCAD File (woodworking CAD program)
Embroidery Design File [possibly read with Melco Sizer Software]
.FMD Open Access File
.FMF IBM LinkWay Font or Icon
.FMG FreeMarkets® Graphics Browser (ActiveX Viewer)
.FMK PowerStation FORTRAN Make File [FORTRAN]
.FML GetRight File Mirror List
Oracle Mirror List
.FMO dBase Ordered Format
.FMP FileMaker Pro Document
.FMT Format File
Style Sheet
Oracle Text Form Format
dBASE IV Format File
MS Schedule+ Print File
MS Visual FoxPro Csreen Format File
.FMV Frame Vector Metafile
.FMX Oracle Executable Form
.FMZ Form*Z Project File
.FN3 Harvard Graphics Font (Harvard Graphics taken over by Serif)
.FND MS Explorer Saved Search
.FNG Font Navigator Group File
.FNK FunkTracker Module
.FNO Folio Infobase [May be mistype of .NFO]
.FNP FlashNpack (convert Flash Movies) [product in beta as of Feb 2002]
.FNT Font File (Windows 3.1)
.FNX Exact Inactive Font
.FO1 Borland Turbo C Font
.FO2 Borland Turbo C Font
.FOB Navision Attain Object File
.FOG Fontographer Font
Computer Generated Forces for Action Fog Defaults
.FOL 1st Reader Saved Message Folder
.FOLDER Mail Folder
.FON Font File
Telix Dialing Directory
Procomm Plus Call Log
.FOO Kai's SuperGoo Fusion
.FOR FORTRAN Source [FORTRAN]
WindowBase Form
.FOT Installed TrueType Font
.FOUR VAX CRYSTALS Chemical Crystallogaphy File
.FOW Family Origins File (Genealogy)
.FOX FoxBase File
.FP FileMaker Pro File
FoxPro Configuration Info
.FP1 Flying Pigs for Windows Data
.FP3 FileMaker Pro File
Imsi FloorPlan 3D
.FP5 FileMaker Database Design Report Template
.FPA Franklin Potter Associates Business Invoice Designer
.FPC FoxPro Catalog File
.FPF Canadian Flight Wizard (flight planning software)
.FPG DIV Game Studio Multi Map [XnView]
.FPK JetForm FormFlow File (JetForm now Accelio)
.FPS Operation Flashpoint Game File
.FPT FileMaker Pro File
FoxPro Memo Fields
.FPW FloorPlan Plus Floorplan Drawing
.FPX FlashPix Bitmap [IrfanView]
.FQF FlashFXP Queue File
.FR3 dBase IV Renamed dBaseIII+ Form
.FRA FrameViewer File
.FRE Creative Digital Blaster Digital VCR File
Male Normal CT [XnView]
.FRF FontMonger Font
.FRG dBase IV Uncompiled Report
.FRL FormFlow File
.FRM Form File
FrameMaker Document
FrameBuilder Document
Oracle Executable Form
Visual Basic Form
dBASE IV Report File (and others)
WordPerfect Merge Form
DataCAD Symbol Report File
Megalux Frame [XnView]
MYOB Form File
.FRO dBase IV Compiled Report
FormFlow File
.FRP PerForm Pro Plus Form
FaxRush Packages (listing of fax files - now .ZPK)
.FRS WordPerfect Graphics Driver
.FRT FoxPro Report File
.FRX Visual Basic Binary Form File
FoxPro Report File
.FRZ FormFlow File
.FS NetBSD File (usually BOOT.FS)
PDT Feature Structure File
FormSaver File
FlexiSIGN File
.FSC Campaign Cartographer 2 File
.FSF Convert It! Factor File
fPrint Audit Tool File
.FSH EA Sports Game Graphic Editor File
.FSI FileSplit
.FSL Borland's Paradox 7 Forms
Corel Paradox Saved Form
.FSM Farandoyle Sample Format
.FSR File Substring Replacement Utility
.FSS Iomega Backup File Selection Set
.FST FastStats Analyzer File
dbFast Linkable Program
.FSX Lotus 1-2-3 Data
FormSaver Fields
.FSY PhotoFantasy Image [XnView]
.FT Lotus Notes Full Text Index
.FTB Roots3 Index File
.FTG Windows Help Full-text Search Group File
.FTM Family File
MicroGrafx Font
.FTP FTP Configuration Information
.FTS Windows Help Full-Text Search Index File
Flexible Image Transport System [XnView]
.FTV Forest & Trees File
.FTW Family File
FontTwister File (text effect generator)
.FU F* You Software Key Generator (Software protection breaker)
.FUL Full Foram Count File
.FUN Koolmoves File (Flash tool)
.FUZZY Fuzzy Logic File
.FVF Fluke View
.FVML formVista (web application development environment) - Product in alpha Jul 2002
.FVS Forest Vegetation Simulator Tree Data File
.FVT Interlock Public Computer Utility
.FW Framework Database
.FW2 Framework II File
.FW3 Framework III File
.FW4 Framework IV File
.FWB FileWrangler Data File Backup
.FWL FileWrangler EXE Library
.FWS FileWrangler Data File for File Splitting Configuration
.FX FastLynx On-Line Guide
.FXD WinFax Sent Document (TIFF format)
FAXit Phonebook
.FXI File-Ex File
.FXM WinFax & WinFax MiniViewer Fax
BigFix
.FXO Fax Image Document [Open with Quick view Plus]
.FXP FoxPro Compiled Source
.FXR WinFax Received Document (TIFF format)
.FXS WinFax Fax Transmit Graphic
.FXT Finale Music Notation Software Plug-in
.FZB Casio FZ-1 Bank Dump
.FZF Casio FZ-1 Full Dump
FontZip Font Packer
.FZV Casio FZ-1 Voice Dump
.??_ Files ending in "_" are often compressed install files of the same
name (e.g., .EX_ expands to .EXE, .DL_ expands to .DLL, etc.)
.G Applause Data Chart
Cliq Accessories Datebook Schedule Group [Linux Suite PDF Description]
.G3 G3 FAX File [XnView] [IrfanView]
.G32 GFA BASIC 32 Program File
PaperPort File
.G3D GenDesigner 3.x Genealogy Database
.G3F Zetafax TIFF File (fine resolution)
.G3N Zetafax TIFF File (normal resolution) [XnView]
.G4 GTX RasterCAD File
Access [XnView]
.G42 ADAPTA DLS/32 Supply Chain Planning (ASCII file with info about SKUs and product-groups)
.G53 ADAPTA DLS/32 Supply Chain Planning (ASCII file with info about Bills of Material)
.G8 PicLab Plane Three Graphics
.GAC Global Audio Control Skin
.GAF Total Annihilation [XnView]
.GAL Gallery of Pictures
Corel Multimedia Manager Album
.GAM GammaFax Fax Document
TADS 2.x Game File
Baldur's Gate Game File
Animated E-mail (unverified)
.GAP Electrical Generation Analysis and Planification
.GAT Gator File (password manager)
.GAU Gaussian Input File (MIME type chemical/x-gaussian-input)
MS Flight Simulator Gauge (e.g., altimiter.gau)
.GAY Reported as Sometimes a Porn File (presumably a renamed standard graphic file)
.GB Chinese
Nintendo GameBoy Emulator ROM Image File
Printfox/Pagefox [XnView]
.GBA Nintendo® Game Boy Advance ROM Image
GrabIt Batch Files
.GBC Nintendo® GameBoy Color Emulator ROM Image File
.GBD Gator Banner File
.GBK Interbase Database Backup
.GBL VAXTPU Global Definitions (VAXTPU is default OpenVMS editor)
.GBR GIMP Brush File [GIMP] [XnView]
Gerber Format File (Graphics Language for the Electronics Industry) [Viewer]
.GBS Gameshark Online Save/Snapshot
.GBT Photoshop File
.GC Sierra Print Artist Greeting Card
.GC1 Golden Common Lisp Source Code
.GC3 Golden Common Lisp Source Code
.GCA GOCA Graphics File
G Compression Archiver Compressed File (link is Japanese site) [Mime Type application/x-gca-compressed]
.GCC VISUAL EPR COSEUL.EXE Result (table of components of Cartesian tensors)
.GCD Generic CADD Drawing
IsoBuster File
Prassi CD Image
GNUe Class Definition
.GCF WinXComp Grouped Compressed File
.GCI GTA2 Game File
VISUAL EPR COSEUL.EXE Result (table of components of irreducible tensors)
.GCM GeoConcept Map File
Group Mail CMessage Store File
.GCP Ground Control Point File (map projection)
.GCR VISUAL EPR COSEUL.EXE Output
.GCT ApplinX Screen Scrapper (unverified)
.GDB Interbase Database
Group Mail File
.GDF GEOS Dictionary
.GDM Bells, Whistles, and Sound Boards Module
.GDR SymbianOS Bitmap Font File (can contain multiple typefaces)
.GDS Image File
Chip Layout Information
.GED GEDCOM Family History File
EnerGraphics File
Graphic Environment Document
Arts & Letters Graphics File
.GEM GEM (a desktop interface) File
Digital Research GEM Paint [XnView]
Ventura Publisher Vector Graphics
.GEN Ventura-Generated Text File
Chromeleon Generic Driver Configuration
dBase Application Generator Compiled Template
.GEO VideoScope File
GeoSoft Compressed Add-on
Geoworks Geode
GeoPaint [XnView]
Trumpf ToPs File (CAD/CAM, laser cutting)
.GER GerberView File (partial support for extended Gerber [RS-274X] file format)
.GF gFx UNIX Plotting Program
METAFONT Generic Font File
Geometric Data
Pilot Logbook for Grok File
Starfleet Command - Empires At War File
.GFA Bitmap Graphics File (see .GFX/Warcraft; files are similar)
.GFB GIFBlast Compressed GIF Image
.GFC Patton & Patton Flowcharting 4 File
.GFD Menus for GNUe Forms
VISUAL EPR Energy, Fields File
.GFI Genigraphics Graphics Link Presentation
.GFT NeoPaint Font
.GFX Genigraphics Graphics Link Presentation
WarCraft II Image File
.GFY Grafical 1.0 File
.GG Sigmac Compiled Machine Code
Gridgen File
Sega GameGear Game ROM Image
Koala Paint Compressed File [XnView]
.GG1 Goofy Golf Deluxe Course
.GG2 Goofy Golf Deluxe Saved Game
.GGI GGI Extension
.GGP GemCom Graphic Format
.GHO Symantec Ghost Disk Image File
.GHS Lasertank High Scores
.GI Sony CD Extreme Global Image File
.GIB Graph-in-the-Box Chart
.GID Windows Help Index File
.GIF Graphic Interchange Format [XnView] [IrfanView]
.GIFF Graphic Interchange Format [XnView] [IrfanView]
.GIG Sound File
.GIM Genigraphics Graphics Link Presentation
.GIW Graph-in-the-Box Presentation
.GIX Genigraphics Graphics Link Presentation
.GJD 7th Guest Game Archive
11th Hour Game Archive [Dragon UnPACKer]
GetJet Professional Database (really an Access database)
.GJF Gaussian Input Data File
.GKH Ensoniq EPS Family Disk Image
.GKS Gravis GripKey Document
.GL GRASP - Graphical System for Presentation File
.GLD Glide File
.GLM Glim Data File
.GLY MS Word Glossary [Buy Office XP at Shop.Microsoft]
.GM Autologic [XnView]
.GM2 Autologic [XnView]
.GM4 Autologic [XnView]
.GM? Heroes of Might & Magic III Saved Game (? = number of human players in game)
.GMAX gmax Game Creator
.GMD Game Maker Stored Game (game under development--also see .GMR)
.GME Interact DexDrive Playstation Memory Card Save
.GMF Applause CGM Graphics
.GMM Group Mail Message Log File
.GMP GTA2 Game File
Group Mail List Information File
Geomorph Tile Map
.GMR Schlafhorst Automation Graphical Monitor Record
Game Maker Compiled Game (finished game--also see .GMD)
.GMS Corel Global Macro File
.GMT Scarlett Expert System Compiler Grammar File (Scarlett is not presently available)
.GMX Group Mail Message File
.GNA Genigraphics Graphics Link Presentation
.GNO Genopro Genealogy Document File
.GNT Micro Focus Generated Code
.GNX Genigraphics Graphics Link Presentation
.GOB Dark Forces Game File [Dragon UnPACKer]
Indiana Jones 3D Archive [Dragon UnPACKer]
.GOC Geoworks Goc Source Code
.GOH Geoworks Goc Header
.GOO Kai's Power Goo / Kai's Supergoo
.GOR Gorilla (Film & Video Production Management)
.GP Geoworks Glue Geode Parameter File
.GP3 CCITT Group 3 File (fax)
GuitarPro 3
.GP4 CCITT Group 4 File (fax)
.GPD VISUAL EPR Input Data for PARAMS.EXE
.GPF Believed to be a Japanese graphic file
.GPG GnuPG Encrypted File (usually compatible with .PGP files)
.GPH Lotus 1-2-3 Graph
Stata Graph
.GPK Omnigo Program Package [Added Info]
.GPL GPS Log File (used by mapping software)
.GPP GraphPap Graph Paper File
Serif GraphicsPlus Object
.GPR VISUAL EPR PARAMS.EXE Results
.GPS Pocket CoPilot GPS Tracks Data File
.GPX BASIS File
.GQA BI/Query Data Model Admin Layer
.GQL BI/Query Data Model (used to be Andyne GQL)
.GQU BI/Query Data Model User Layer
.GR XGMML (eXtensible Graph Markup and Modeling Language) File
.GR2 Windows 3.0 Screen Driver
.GR3 Windows 3.0 Screen Grabber
.GRA Flight Simulator File
MS Graph Chart
SigmaPlot Data File
STN Express Transcript Graphics File (search science databases through STN®)
.GRAAL Offical Graal Level
.GRB MS-DOS Shell Monitor
.GRD Gradebook Power File
Map Projection Grid File
.GREY Picture File (raw GREY graphics) RAW RGB 24-bit Graphic [XnView]
.GRF Graph
Graph Plus Graph File
Golden Sof