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Alphabetic File Extension List

This list will take for a moment to be fully loaded as the file extension lists are quite long. These lists contain information about the extension name, the name of the program, and the creator's company. Click on the extension to see the detail page. The total extensions in this list: 273.

Extension Information
C4 Edmics
CAB Install Shield v5.x or 6.x Compressed File (InstallShield Software Corporation)
CAB Cabinet File (Microsoft Corporation)
CAD QuickCAD CAD Drawing (Autodesk, Inc.)
CAD EXTRACAD Drawing (Softwing Srl)
CAD CadStd Drawing (CadStd Computer)
CAF Class Action Gradebook Secondary/College Edition Data File (CalEd Software)
CAF GarageBand Apple Loop (Apple Inc.)
CAL PhotoSmart 850 Digital Camera Firmware Update (Hewlett-Packard Development Company, L.P.)
CAL QV Map Geographic Coordinates (Touratech)
CAL Calendar File
CAM Camtasia Studio Project/Producer Files (TechSmith Corporation)
CAM HouseCall AUTOEXEC.BAT Backup (Trend Micro Inc.)
CAM Abe's Oddysee Background (Oddworld Inhabitants)
CAP Code Architect Project File (Embedded Systems Academy)
CAP NetMon Capture File (Microsoft Corporation)
CAP Generic Network Capture Document
CAR AtHome Assistant
CAR Railroad Tycoon 3 Car Properties (PopTop Software Inc.)
CAT Rational Rose Logical Package (IBM)
CAT Advanced Disk Catalog Disk Catalog (Elcomsoft)
CAT Security Catalog (Microsoft Corporation)
CBR CDisplay RAR Archived Comic Book File
CBZ CDisplay ZIP Archived Comic Book File
CC Trojan Spymaster.A Text File
CC Picture Window's Color Curve File
CC ADS Source Code (Autodesk, Inc.)
CCA Common Component Architecture (CCA) Component (Dept. of Energy Laboratories)
CCA Multimedia Fusion File (Clickteam)
CCA CC:Mail Archive File (IBM)
CCD CloneCD Control File (SlySoft Inc.)
CCF CryptLoad Container File (CryptLoad)
CCF CommView Capture File (TamoSoft, Inc.)
CCF AudioReQuest Control File
CCT Railroad Tycoon 3 Car Type Description (PopTop Software Inc.)
CCT Macromedia Director Shockwave Cast (Adobe Systems Incorporated)
CCT Windows Live Messenger Contacts File (Microsoft Corp.)
CD CD-i OptImage CD Image
CDA CD Audio Track Shortcut
CDA Giza Specifier Typical File (20-20 Technologies)
CDB The Cleaner Trojan Database (Moosoft Development LLC.)
CDB Nokia 9210/9290 Phone Contact Database (Nokia)
CDB CardScan Database (Corex Technologies)
CDC CLAN Debug File (Child Language Data Exchange System)
CDC Canvastic Documnet/Drawing (Canvastic)
CDC Nero CD Cover File (Nero AG)
CDD Concept Draw Drawing/Diagram (Computer Systems Odessa, Corp.)
CDD Cadifra Diagram (Cadifra Inc.)
CDD Balder Multiboot Configuration File (Hans Christian Ihlen)
CDE CADKEY Dynamic Extension (Kubotek USA Inc.)
CDE Honeywell Hybrid Control Designer
CDF ANDI/netCDF Mass Spectrometry Data Interchange format
CDF Unidata NetCDF Graphic File (University Corporation for Atmospheric Research)
CDF Xilinx Integrated Software Environment Chain Description File (Xilinx, Inc.)
CDG DART Karaoke Studio CD+G File
CDG CanoDraw Graph (Microcomputer Power)
CDI CD Anywhere Virtual CD (V Communications, Inc.)
CDI Disc Juggler CD Image File
CDI Phillips Compact Disk Interactive Format
CDL NetCDF CDL Metadata (Unidata)
CDL CADKEY Advanced Design Language (CADL) (Kubotek USA Inc.)
CDM PowerDesigner Conceptual Model File
CDM NTI CD&DVD-Maker Image File (NewTech Infosystems)
CDM Compressed Music Format
CDP Ca Visual Objects Platform for Developer (CAVO) (CA)
CDR Final Cut Pro CD/DVD Image File (Apple Inc.)
CDR GameJack Virtual CD or DVD Image (S.A.D. GmbH.)
CDR Corel Vector Graphic Drawing (Corel Corporation)
CDS United States Postal Service Computerized Delivery Sequence
CDS ChemDraw Stationery Document
CDS Delphi TClientDataset Data (Borland Software Corporation)
CDT ProWORX Nxt Temporary Long Comment Data (Schneider Electric)
CDT MRS-802 Album Data (Zoom Corporation)
CDT CorelDraw Template (Corel)
CDX Visual Foxpro Index (Microsoft Corporation)
CDX Compound Index
CDX iAnywhere Index File (Sybase, Inc.)
CEL Lumena CEL Bitmap (Time Arts Software)
CEL Animator Graphic (Autodesk, Inc.)
CEL Audition Loop File (Adobe Systems Incorporated)
CER Internet Security Certificate File
CER Cerius2 (Accelrys Software Inc.)
CFA Premiere Pro Audio File (Adobe Systems Incorporated)
CFG Configuration
CFG Flight Simulator Aircraft Configuration File (Microsoft Corporation)
CFG Pro/ENGINEER Configuration (PTC)
CFM Cold Fusion Template File
CFR IBM Configurator Report
CFS ChatFactory Script (ChatFactory Team)
CFS Signal Data (Cambridge Electronic Design Limited)
CGI Common Gateway Interface Script
CGM Computer Graphics Metafile [New Style]
CGM Computer Graphics Metafile [Old Style]
CGR Quest3D Program Part (Act-3D B.V.)
CGR CATIA Drawing (Dassault Systèmes)
CHD Ares Font Chameleon Font Descriptor
CHD ViewChoice (Payroll Associates, LLC)
CHD MAME Compressed Hard Disk File (MAME Team)
CHK SSConvert Multilanguage Video Subtitle Data (Screen Subtitling Systems Ltd.)
CHK 3D Movie Maker Interface Data File (Microsoft Corporation)
CHM HTML Help Compiled Help File (Microsoft Corporation)
CHM ChemDraw Chemical Structure (CambridgeSoft Corporation)
CHR Borland Language Stroke Font File (Borland Software Corporation)
CHR Wormhole 2.0/ Liero Graphics Editor Liero Graphics Mod
CHT BizInt Smart Charts for Drug Pipelines Document (BizInt Solutions)
CHT Harvard Graphics Vector File (Harvard Graphics)
CHT ZSNES Cheat Code (ZSNES Team)
CHW HTML Help General Index Funtionally comparable to .GID.
CI CitectSCADA File
CID Navigator Chart Image Description (Tecepe)
CID CallerID File (AnalogX)
CIF Ariba Buyer Catalog Information Format (Ariba Inc.)
CIF Creator Document File (MultiAd, Inc.)
CIF Easy CD Creator Image (Sonic Solutions)
CIT Intergraph Scanned Image (Intergraph Corporation)
CIT Norton CleanSweep Installation Log (Symantec Corporation)
CIT ClockIt Employee Duty Roster (
CLASS Java Class File (Sun Microsystems, Inc.)
CLASS Java Bytecode (Sun Microsystems, Inc.)
CLG CollageMaker Graphic (Galleria Software)
CLI Client Management System Customer File (HawkSoft, Inc.)
CLK WatchGuard Cloaked File (WatchGuard Technologies, Inc.)
CLK ClickFORMS Data (Bradford Technologies Inc.)
CLP DeskMate Clip
CLP Clipper 5 Compiler Script
CLS ArcView Geocoding Classification File (ESRI)
CMD 1st Reader External Command Menu
CMD Command File for Windows NT (Microsoft Corporation)
CMF Creative Music File
CMF CaseMap File Viewer Definition (LexisNexis)
CMF MapPoint 2006 Map File (Microsoft Corporation)
CMP Freelancer Physical Model Layout (Microsoft Corporation)
CMP Address Document
CMS CaseMap Case Script (LexisNexis)
CMS TrialDirector Compound Media Storage
CMX Apple Viewer (Apple Inc.)
CMX Presentation Exchange Image (Corel)
CND Embroidery Design File
CND ControlDraw File
CNF minisat or ubcsat Connective Normal Form Logic Equations (SATLIB - The Satisfiability Library)
CNF KiSS Paper Doll Set
CNF 1-2-3 Configuration (IBM)
CNT Help File Contents
CNT Rational Rose 98 Contents Tab File (IBM)
CNV Word Data Conversion File (Microsoft Corporation)
CNV Canvas Versions 6, 7, 8, 9 Graphic File (ACD Systems Ltd.)
COD C Compiler Output (Microsoft Corporation)
COD Atlantis Word Processor Encrypted Document (Rising Sun Solutions, Inc.)
COD Agent Charmap (Forté)
COD SWAT Input Control File
COD Blackberry Compiled Java Code (Research In Motion Limited)
CODEC Rockbox CODEC (The Rockbox Crew)
COM EICAR Anti-Virus Test File (EICAR)
COM DOS or CP/M Executable
COM AOL (America Online, Inc.)
CON Battlefield 1942 Configuration File (Electronic Arts, Inc.)
CON LucasArts Container File (LucasArts Entertainment Company LLC)
CON Train Simulator Train/Model Identification File (Microsoft Corporation)
CONFIG WatchDirectory Task Information (GdP Software)
CONFIG NET Application Configuration Information (Microsoft Corporation)
CONFIG Rockbox Configuration File (The Rockbox Crew)
CONTACT Windows Vista Contact File (Microsoft Corporation)
CP CompuMedic Database
CP Audition Script (Adobe Systems Incorporated)
CPC Cartesian Products Compressed Internet Document (Cartesian Products, Inc.)
CPF Canvastic Preferences (Canvastic)
CPF CircuitCAM Manufacturing Process Definition File (Aegis Industrial Software Corporation)
CPF O&O CleverCache Profile (O&O Software GmbH)
CPI Cartesian Products Compressed Internet Document (Cartesian Products, Inc.)
CPI AVCHD Clip Information
CPI Windows International Code Page (Microsoft Corporate)
CPL Windows Control Panel Extension (Microsoft Corporation)
CPL Compel Show Ver 1 Presentation (Click2learn, Inc.)
CPP Visual C++ Source Code File (Microsoft Corporation)
CPP Xcode Core C Program (Apple Inc.)
CPP C++ Builder 6 (Borland Software Corporation)
CPS Photo House Image (Corel Corporation)
CPT After Shot (Corel Corporation)
CPT CCRYPT Encrypted File
CPT Compact Pro Archive (Cyclos)
CPX Age of Empires I and II Campaign File (Microsoft Corporation)
CPX Code Page Translation File (Microsoft Corporation)
CPY RM/COBOL Development System Include File (Liant)
CPY eCopy Scanned Document (eCopy, Inc.)
CPY Flexus COBOL Definitions
CR Crack File
CR2 Canon Digital Camera Raw Image Format (Canon, Inc.)
CRC Pro/ENGINEER Temporary File (PTC)
CRC JPEG Sheriff CRC Info File (engineering bureau Office Automation)
CRC Total Commander CRC File (Christian Ghisler, C. Ghisler & Co.)
CRD Guitar Chord File
CRD ColdRED Script File
CRD Spanish Whiz Card Game Sound File (GB Blanchard)
CRS StepMania Course (StepMania Development Team)
CRS Dance With Intensity
CRT UNIX Crontab File
CRT Certificate File
CRW Crossword Genius
CRW CHARTrunner Workspace Definition (PQ Systems)
CRW Canon Digital Camera Raw Image Format (Canon, Inc.)
CRX Links Games Course File
CS Tribes 2 Scripting File (Sierra)
CS Visual C#.NET Source Code (Microsoft Corporation)
CS Caditor Document (Caglow)
CSD Bitstream Fontware
CSD Csound Unified File Format for Orchestras and Scores (Dr. Richard Boulanger)
CSD Canon Camera Configuration File (Canon, Inc.)
CSE GPS Pathfinder Office Coordinate System (Trinble Navigation Limited)
CSE Cardinal Studio Template File
CSF Brava Reader Content Sealed Format (Informative Graphics Corp)
CSF Acrobat Color Setting (Adobe Systems Incorporated)
CSF Photoshop Color Settings (Adobe Systems Incorporated)
CSH Cubase Offline Processing Information (Steinberg Media Technologies GmbH.)
CSH CARA-Script-Interpreter-Engine Script
CSH csh Script
CSI Cyberautograph Signed Item
CSO CISO Compressed ISO CD Image
CSP Crystal Enterprise Crystal Server Page
CSP ChaoSynth Parameter File (Nyrsound)
CSP AudioZip Encoded Audio
CSR Fast SMS Set SMS Relay Configuration (Comat AG)
CSS Citadel SafStor User Script File
CSS Hypertext Cascading Style Sheet
CST CHARTrunner Chart Style Definition (PQ Systems)
CST Medbasin Model Calibration File (National Technical University of Athens, Laboratory of Reclamation Works & Water Resources Management)
CSV Comma-Separated Variables
CSV Boso View Express Railway and Structure File (Mackoy)
CT Cheat Engine Cheat Table (
CT CTwin Project Data (Procedimientos-Uno, S.L.)
CT Scitex CT Handshake Continuous-Tone Bitmap
CTB AutoCAD Color-dependent Plot Style Table (Autodesk, Inc.)
CTB Custody Toolbox Data File (Five O'clock Software)
CTF Symphony Character Code Translation (IBM)
CTF AVG Update Control File (AVG Technologies)
CTF CoffeeCup HTML Editor Table File (CoffeeCup Software, Inc.)
CTG BMC Software Patrol File
CTG Powershot Pro 70 Info File (Canon, Inc.)
CTL Visual Basic User-defined Control (Microsoft Corporation)
CTL EditPlus Cliptext File (ES-Computing)
CTL PDP-10 Batch Control File
CTP BestAddress HTML Editor Combined Template File (Multimedia Australia Pty. Ltd.)
CTP American Greetings CreataCard (Broderbund)
CTX Alphacam Compiled Text (Planit)
CTX GE Industrial Systems CIMPLICITY Text Version HMI Screen
CTX CTRAN/W DEFINE Compressed Data File (Geo-Slope International)
CUE CUEcards 2000 Database (Marcus Humann)
CUE BPM Studio Cue Points (ALCATech)
CUE CDRWin and Others Description File for a CD-Image
CURSOR Sun Icon/Cursor
CVA Compaq Diagnostics (Hewlett-Packard Development Company, L.P.)
CVR Bitware Fax File
CWK GCPrevue Work File (Graphicode)
CWK CattleMax Data File (Cattlesoft, Inc.)
CWK ClarisWorks Data File (FileMaker, Inc.)
CWR Wrapcandy Candy Wrapper (
CWR Crystal Reports Report (Crystal Decisions)
CXT Crocodile Technology Circuit (Crocodile Clips Ltd)
CXX Visual C++ Source Code File (Microsoft Corporation)
CXX Unknown Apple II File (found on Golden Orchard Apple II CD Rom)

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