The Known File Extensions/Types References – C*

Posted by Admin L in IT Resources/Information on 09-12-2011.

Collector: Nosa Lee
Original Address: https://www.seeksunslowly.com/file-extensions-types-references-c
To reprint this article, please indicate the source, thank you.
_____________________________________

Now, I collected all the known file extensions/types for your reference, I grouped them according to the first character due to there are too many file extensions/types.

The following file extensions/types are grouped as C*, to refer to more file extensions/types or download them (a compressed txt file that separates the extension and description with ” : “), please click the following links.

A B C D E F G H I J K L M N

O P Q R S T U V W X Y Z
Number  Symbol

Download All File Types/Extensions in ONE Compressed File

C   UNIX Compact File Achive
C   Desktop Color Separation Specification Cyan Layer
C   Check Point Site Configuration for Secure Remote (Check Point Software Technologies Ltd.)
C   C/C++ Program File
C   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
C   ADS Source Code (Autodesk, Inc.)
C   Origin C Program File (OriginLab Corporation)
C V   Cvip File
C!_   Audio Utility Midimach Compressed File
C#=   C# (Microsoft Corporation)
C++   C++ Source Code
C–   Sphinx C– Source
C0   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
C00   Ventura Print File
C00   WinAce Compressed File Split Portion of Compressed File (e-merge GmbH)
C01   WinAce Compressed File Split Portion of Compressed File (e-merge GmbH)
C01   Genesis 2000 (Genesis 2000, Inc.)
C02   WinAce Compressed File Split Portion of Compressed File (e-merge GmbH)
C02   (C02-C38) Driveimage Ace File
C03   WinAce Compressed File Split Portion of Compressed File (e-merge GmbH)
C04   WinAce Compressed File Split Portion of Compressed File (e-merge GmbH)
C05   WinAce Compressed File Split Portion of Compressed File (e-merge GmbH)
C06   WinAce Compressed File Split Portion of Compressed File (e-merge GmbH)
C07   WinAce Compressed File Split Portion of Compressed File (e-merge GmbH)
C08   WinAce Compressed File Split Portion of Compressed File (e-merge GmbH)
C08   Lord Of Destruction Game File
C09   WinAce Compressed File Split Portion of Compressed File (e-merge GmbH)
C1   Pov-ray for Windows v3.1 Scenes Advanced Newltpot File (Persistence of Vision Raytracer Pty Ltd.)
C10   WinAce Compressed File Split Portion of Compressed File (e-merge GmbH)
C10   IRIG 106 Original Recording File (Range Commanders Council)
C13   Charlie Packer
C1S   Capture One Photo Cache File (Phase One)
C2   Pov-ray for Windows v3.1 Scenes Advanced Newltpot File (Persistence of Vision Raytracer Pty Ltd.)
C2C   CopyToDVD Project File (VSO-Software)
C2D   WinOnCD CD Image (Sonic Solutions)
C2E   NJStar Chinese Word Processor Dictionary File Index (NJStar Software Corp.)
C2I   Driver File
C2I   Tt File
C2L   Cequadrat WinonCD File
C2X   WinonCD File
C3   3D Model
C3   Pov-ray for Windows v3.1 Scenes Advanced Newltpot File (Persistence of Vision Raytracer Pty Ltd.)
C39   (C39-C56) Quicken Ace File
C3D   Cult3D Designer Intermediate File
C3D   Coordinate 3D
C3D   Chem3D Chemical File (CambridgeSoft Corporation)
C3D   Micrografx
C3E   Cype
C3T   Chem3D Chemical Template File
C4   Joint Engineering Data Management (JEDMICS) DoD Engineering Data Format
C4   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
C4   Edmics
C4D   Clonk Object Definition (RedWolf Design GmbH)
C4D   Cinema 4D 3D Model (MAXON Computer GmbH)
C4F   Clonk Round File (RedWolf Design GmbH)
C4G   Clonk System File (RedWolf Design GmbH)
C4P   Clonk Player File (RedWolf Design GmbH)
C4S   Clonk Scenario (RedWolf Design GmbH)
C4V   Clonk Video (RedWolf Design GmbH)
C6   Ashlar-Vellum (Ashlar Incorporated)
C64   Commodore 64 Game ROM
C86   Computer Innovation C86 C Program
C9   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CA   CLAN Conversion Analysis (Child Language Data Exchange System)
CA   FlexPlus Data File (DATAIR Employee Benefit Systems, Inc.)
CA   Telnet Server Initial Cache Data File
CA0   Installer Packed and Split File (Borland Software Corporation)
CA1   OzWin CompuServe E-mail/Forum Access Catalog File
CA1   Delphi Install Disk11 File
CA1   STABCAL (stability calculation for aqueous systems) File
CA2   STABCAL (stability calculation for aqueous systems) File
CA2   Delphi Install Disk12 File
CA3   Delphi Install Disk9 File
CA4   STABCAL (stability calculation for aqueous systems) File
CA4   Electronics Workbench Circuit
CA4   Delphi Install Disk10 File
CA5   Delphi Install Disk11 File
CA7   STABCAL (stability calculation for aqueous systems) File
CA7   Beta 44 Job File
CAB   Cabinet File (Microsoft Corporation)
CAB   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CAB   Install Shield v5.x or 6.x Compressed File (InstallShield Software Corporation)
CAC   Infoview (Microsoft Corporation)
CAC   dBASE IV Executable File
CAC   Collage Alarm Clock Alarm File (Collage Alarm Clock)
CACHE   Snacc-1.3 VDA File
CACHE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CAD   EXTRACAD Drawing (Softwing Srl)
CAD   Softdesk Drafix CAD File
CAD   Inago Rage Compact Arena Definition (Dejobaan Games)
CAD   CadStd Drawing (CadStd Computer)
CAD   QuickCAD CAD Drawing (Autodesk, Inc.)
CADET   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CAE   Abaqus/CAE CAE Model File (Dassault Syst鑝es)
CAE   Caditor Encrypted Document (Caglow)
CAF   GarageBand Apple Loop (Apple Inc.)
CAF   Southern Company Terrestrial Data Acq
CAF   Class Action Gradebook Secondary/College Edition Data File (CalEd Software)
CAG   CADfix ASCII Geometry File (ITI TranscenData)
CAG   Clip Gallery Catalog File (Microsoft Corporation)
CAG   Capella Gallery Data File (Capella Software)
CAI   SeeYou Flight Data (Naviter)
CAISSE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CAJ   CAJViewer Full-text Database
CAK   Sega FILM/CPK File Format (Sega of America, Inc.)
CAKEWALKWINDOWLAYOUT   Cakewalk Window Layout (Cakewalk)
CAL   Cakewalk Application Language Script (Cakewalk)
CAL   SuperCalc Worksheet
CAL   PhotoSmart 850 Digital Camera Firmware Update (Hewlett-Packard Development Company, L.P.)
CAL   QV Map Geographic Coordinates (Touratech)
CAL   Creatacard Calendar Project (Broderbund)
CAL   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CAL   DOS Calendar Creator File
CAL   Calendar File
CAL   Schedule Data (Microsoft Corporation)
CAL   CALS Raster
CAL   CyberAudioLibrary Link
CAL   HTML Calendar Maker Pro
CAL   Radiance Function File Format
CAL   Daqarta Extended Audio Data (Interstellar Research)
CALC   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CALCULATOR   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CALENDAR1994   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CALL   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CALS   CALS Raster
CAM   Minolta Scanner 3D File (Minolta)
CAM   Camtasia Studio Project/Producer Files (TechSmith Corporation)
CAM   NASCAR Racing 2002 Replay Camera Settings (Sierra)
CAM   Calibrated Camera File Photomodeller
CAM   HouseCall AUTOEXEC.BAT Backup (Trend Micro Inc.)
CAM   Mill Data File (GraphiTech Ltd.)
CAM   Abe’s Oddysee Background (Oddworld Inhabitants)
CAM   Casio QV Digital Camera Image (Casio Computer Co., Ltd.)
CAMP   Windows Color System Color Appearance Model Profile (CAMP) (Microsoft Corporation)
CAMPROJ   Camtasia Studio Project File (TechSmith Corporation)
CAMREC   Camtasia Studio Recorder File (TechSmith Corporation)
CAMS   Driver (Atari)
CAMSHR   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CAMTHTR   Camtasia Studio Theater File (TechSmith Corporation)
CAN   Canon Navigator Fax
CAN   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CAN   .Can Encryptor/Decryptor Encrypted File
CAP   NetMon Capture File (Microsoft Corporation)
CAP   Snoop Capture File
CAP   Telix Session Capture
CAP   TTC FireBerd 500 PC Capture File
CAP   Ventura Caption
CAP   WWG Domino Capture File
CAP   WWG LinkView PRO Capture File
CAP   Generic Network Capture Document
CAP   PacketView Pro Packet Trace Data (Klos Technologies, Inc.)
CAP   Code Architect Project File (Embedded Systems Academy)
CAP   Shomiti Surveyor Capture File
CAP   ProComm/Telix session Capture File
CAP   Sniffer Capture File (Network Associates Technology, Inc.)
CAP   Fluke Protocol Inspector Capture File
CAP   Capella Music Sheet Data File (Capella Software)
CAP   Agilent LAN Analyzer Capture File
CAPITAL   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CAPROJ   ChartAble Project File (MRDC Ltd)
CAPS   Visimetrics Digital CCTV Recording
CAPS   CaptureServer CaptureServer (GoldGingko Software)
CAPS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CAR   Railroad Tycoon 3 Car Properties (PopTop Software Inc.)
CAR   Cellsprings/Web or DT Rule File (J.M.G. Elliott)
CAR   PSA Cards Address Book (PSA Software)
CAR   Design-Your-CD Data File (Avery)
CAR   Carnivores / Ice Age Resource File (Action Forms, Ltd.)
CAR   CardMaker Ver. 1.0-2.0 Card File (Avery)
CAR   NeoBook Cartoon (NeoSoft Corp.)
CAR   CAR Archive Compressed Archive (MylesHi! Software)
CAR   SeeYou Airspace (Naviter)
CAR   Viper Racing Car Description File
CAR   SAPCAR Archive (SAPGenie.COM)
CAR   Creatacard Quarter-Fold Card Project (Broderbund)
CAR   AtHome Assistant
CAR   Carrara Environment (DAZ Productions)
CAR   Insight II Cartesian Coordinate File (Accelrys Software Inc.)
CAR   NASCAR Racing 2002 Car Description File (Sierra Entertainment, Inc.)
CARAMBA   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CARD   Funkiball Adventure Auto-Saved Game File (RealNetworks Inc.)
CARD   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CARDS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CAROL   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CAROLES   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CAS   FLUENT Case (Fluent Incorporated)
CAS   Comma-delimited ASCII File
CAS   Quest Compiled Adventure Game (Axe Software)
CAS   Atari Cassette Image File (Atari)
CAS   i2’s Case Notebook Timeline Analysis
CAS   Cascade DTP Ver. 3 Layout File (Price Media)
CAS   Videoton TVC Computer Tape File
CAS   Casio Calculator Program (Casio Computer Co., Ltd.)
CAS4   Cascade DTP Ver. 4 Layout File (Price Media)
CASCII   CACTVS Chemical ASCII Format
CASE   EnSight Results File (Computational Engineering International (CEI))
CASE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CASECONVERT   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CASTLE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CAT   Todd Osborne Directory Catalog
CAT   TablEdit Chord Catalog
CAT   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CAT   Security Catalog (Microsoft Corporation)
CAT   Catz Cat Description File (Ubisoft Entertainment)
CAT   Cognos Impromptu Database Report
CAT   TAPCIS Forum Library Catalog
CAT   Casio Calculator Program (Casio Computer Co., Ltd.)
cat   UNIX Configuration File
cat   UNIX Message Catalog File
CAT   dBASE Catalog
CAT   OzWin CompuServe E-mail/Forum Access Catalog File
CAT   Advanced Disk Catalog Disk Catalog (Elcomsoft)
CAT   Rational Rose Logical Package (IBM)
CAT   Quicken IntelliCharge Categorization File (Intuit Inc.)
CAT   PhotoStudio (ArcSoft, Inc.)
CATALOG   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CATALOG   CATIA Catalog (Dassault Syst鑝es)
CATANALYSIS   CATIA (Dassault Syst鑝es)
CATDRAWING   CATIA Drawing (Dassault Syst鑝es)
CATEGORIES   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CATFCT   CATIA (Dassault Syst鑝es)
CATMATERIAL   CATIA Material Specification (Dassault Syst鑝es)
CATPART   CATIA Part Description (Dassault Syst鑝es)
CATPROCESS   CATIA Process Description (Dassault Syst鑝es)
CATPRODUCT   CATIA Product Description (Dassault Syst鑝es)
CATSHAPE   CATIA Shape (Dassault Syst鑝es)
CATSWL   CATIA (Dassault Syst鑝es)
CATSYSTEM   CATIA (Dassault Syst鑝es)
CAULDRON   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CAVE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CAZ   Computer Associates Archive (CA)
CA_   Cakepro Compressed Audio File
CB   Crystal Button File
CB   Gigascape Virtual Town Project (Third Dimension Limited)
CB   CoolBasic Source File (CoolBasic Software)
CB   Brief Macro Source Code
CB   COMBAS Source Code (Living Byte Software GmbH)
CB   Clean Boot File (Microsoft Corporation)
CB3   CliBench Mk III SMP 0.7.10
CB4   Analytics Cube (Actuate Corporation)
CB7   Comic Book Viewer
CBC   CubiCalc Fuzzy Logic System File
CBCP   CodeBaby Production Studio Character Package (CodeBaby Corp.)
CBCX   Comic Book Creator Comic Book Save File Format (Planetwide Media)
CBD   MapBrowser/MapWriter Vector Map Data
CBD   System DLL Catroot File
CBD   WordPerfect Dictionary File (Corel Corporation)
CBDS   Comic Book DS Comic Book DS (Gnese)
CBF   Infinity Game Engine Archive of Resources (BioWare Corp.)
CBF   CoffeeCup Button Factory Button (CoffeeCup Software, Inc.)
CBF   Calendar Builder Saved Calendar (RKS Software)
CBH   ChessBase Chess Database File
CBI   IBM Mainframe Column Binary Formatted File
CBIN   CACTVS Chemical Binary Format
CBK   Kreon Scanner File
CBK   Giza Specifier Drawing Backup File (20-20 Technologies)
CBK   CardScan Backup File (Corex Technologies)
CBK   System DLL Catroot File
CBK   National Construction Estimator 32 Costbook
CBL   COBOL Program
CBL   CD Box Labeler Pro (Green Point Software UK Ltd.)
CBL   Contextual Browsing Language Viewer
CBL   RM/COBOL Development System Source File (Liant)
CBL   PDP-10 COBOL Compiler Source
CBLE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CBM   Fuzzy Bitmap
CBM   XLib Compiled Bitmap
CBMV   Comic Book Millennium Comic Book Collection (Beaver Valley Software Company)
CBN   CBN Selector Smart Image (CBN Systems)
CBN   PaperMaster Cabinet (j2 Global Communications, Inc.)
CBO   Interactive Training Bookmark (Microsoft Corporation)
CBO   COMBAS Object File / Compiled Program (Living Byte Software GmbH)
CBP   Conlab Project (Apix Concrete Solutions)
CBP   CD Box Labeler Pro (Green Point Software UK Ltd.)
CBP   Code::Blocks Project File (The Code::Blocks Team)
CBP   CentraBuilder (CentraLearning International)
CBR   CDisplay RAR Archived Comic Book File
CBS   Code Breaker Save File (GSCCC, Inc.)
CBS   Computer Based Training (Microsoft Corporation)
CBS   Calendar Builder Style Sheet (RKS Software)
CBS   Borland Computer Based Training (Borland Software Corporation)
CBS   Cardbox Macro Script
CBS   MasterWord Button Bar Configuration
CBT   Computer Based Training
CBTX   Comic Book Creator Comic Book Page Template File (Planetwide Media)
CBTZ   Comic Book Creator Comic Book Page Template Container File (Planetwide Media)
CBU   Conlab Update Information (Apix Concrete Solutions)
CBV   ChessBase Archive File (ChessBase GMBH)
CBW   Cardbox Workspace
CBX   Rational XDE (IBM)
CBZ   CDisplay ZIP Archived Comic Book File
CC   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CC   KODAK Color Control Profile (KODAK)
CC   Trojan Spymaster.A Text File
CC   ADS Source Code (Autodesk, Inc.)
CC   CC Language Source Code
CC   Visual dBASE Custom Class File
CC   C++ Program File
CC   dB2K Custom Class File
CC   Picture Window’s Color Curve File
CC1   Chem3D Cartesian Coordinates 1
CC1   Briggs Softworks Calendar Commander
CC2   ClubControl 2
CC2   Chem3D Cartesian Coordinates 2
CC2   Calendar Commander Calendar File (Briggs Softworks)
CC3   CUEcards Professional Database (Marcus Humann)
CC5   Calendar Creator 5.x 6.x File
CCA   Common Component Architecture (CCA) Component (Dept. of Energy Laboratories)
CCA   CC:Mail Archive File (IBM)
CCA   Multimedia Fusion File (Clickteam)
CCAD   ClarisCAD data
CCB   Visual Basic Animated Button Configuration
CCC   WordPerfect Office Calendar File (Corel Corporation)
CCC   Curtain Call Native Bitmap Graphic
CCC   FLEXnet Manager (Acresso Software Inc.)
CCC   Internet Chat (Comic Chat) Conversation/Chatroom Log (Microsoft Corporation)
CCD   IsoBuster Data Recovery File (Smart Projects)
CCD   CloneCD Control File (SlySoft Inc.)
CCD   Vector CAD Program File
CCDOC   Rational CCDoctor Output (IBM)
CCE   Calendar Creator 2 Event File
CCF   Symphony Communications Configuration File
CCF   CryptLoad Container File (CryptLoad)
CCF   OS/2 Multimedia Viewer Configuration File
CCF   AudioReQuest Control File
CCF   Card Studio Card File Template (Hallmark)
CCF   Cannondale Motorcycle ECM System Engine Calibration File (Cannondale Corp.)
CCF   Cumulus Database (Canto)
CCF   Remote Control File
CCF   CommView Capture File (TamoSoft, Inc.)
CCF   GPS Pathfinder Office Configuration File (Trinble Navigation Limited)
CCH   Corel Chart
CCH   Forgotten Realms Unlimited Adventures (FRUA) Character Reference File
CCH   Photomodeler Photochip Thumbnail File (OES Systems)
CCH   PhotoModeler
CCH   Fabasoft Components
CCH   .NET Configuration and Security Policy File (Microsoft Corporation)
CCI   CCITT Group 3 and Group 4 Encoding
CCITT   CCITT Group 3 and Group 4 Encoding
CCJ   Crossword Compiler Compiled Crossword Applet (Antony Lewis)
CCK   Corel Clipart Format (Corel)
CCL   Intalk Communication Command Language
CCL   CCtools Levelset (Translucent Dragon)
CCL   PDP-10 Concise Command Language (Used by COMPIL.EXE to Talk to Compilers)
CCM   CC:Mail Mailbox (IBM)
CCM   Multimedia Fusion Custom Menu (Clickteam)
CCN   Calendar Constructer Calendar Data (Aspire Software)
CCN   Multimedia Fusion Express File (IMSI/Design LLC)
CCN   Vitalize! Game File
CCO   CyberChat Data File
CCO   Command Console Command File (DigitallyCreated)
CCO   XBTX BTX Graphics File
CCO   MicroSim PCBoard Autorouter Session Output
CCP   CaptureCAM-PRO Screen Recording (Click-N-Learn PTY LTD)
CCP   ‘RIB Import Converter Profiles Import profile (RIB Software)
CCP   Two Brothers Software Encrypted File Information (Two Brothers Software)
CCP   CalComp Color Palette File
CCP   CloneCD (SlySoft Inc.)
CCPR   CaptureCAM-PRO (Click-N-Learn PTY LTD)
CCR   Systems Management Server (SMS) Client Configuration Request (Microsoft Corporation)
CCR   Internet Chat Room Shortcut (Microsoft Corporation)
CCR   HealthFrame ASTM Continuity of Care Record (Records For Living, Inc.)
CCRF   Calcomp Raster Bitmap
CCS   CableNut Configuration Custom Setting File (CableNut Software)
CCS   CCS-lib File
CCS   CONKY CeZaR Stribas International
CCS   TrialDirector Clip Script (inData Corporation)
CCS   Candy Candy (Construction Computer Software)
CCT   SIL Hebrew Font System Transliteration Table
CCT   Railroad Tycoon 3 Car Type Description (PopTop Software Inc.)
CCT   MicroSim PCBoard Design Information and Rules For Autorouting
CCT   LogicWorks Schematic File (Capilano Computing)
CCT   DesignWorks Schematic File (Capilano Computing)
CCT   Windows Live Messenger Contacts File (Microsoft Corp.)
CCT   Macromedia Director Shockwave Cast (Adobe Systems Incorporated)
CCV   Crystal Vision Report (CTMS)
CCX   CorelDraw File
CCX   Corel Compressed Exchange File
CCX   Total Annihilation: Counter-Strike
CCX   Multimedia Fusion Extension (Clickteam)
CCXML   Call Control eXtensible Markup Language (W3C)
CCZ   Client-Course Manager Customized Report Distribution File (PTEP Inc)
CC_   Audio Utility Midimach Compressed File
CD   Class Diagram (Unicode)
CD   CD-i OptImage CD Image
CD   cdTree Content List
CD1   Cafeteria Document System Data File (DATAIR Employee Benefit Systems, Inc.)
CD150   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CD2   Cafeteria Document System Custom Text File (DATAIR Employee Benefit Systems, Inc.)
CD2   Click’N Design 3D CD Label (Avery Dennison Corporation)
CDA   CD Audio Track Shortcut
CDA   Giza Specifier Typical File (20-20 Technologies)
CDA   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CDAT   Internet Security and Acceleration (ISA) Server Cache File (Microsoft Corporation)
CDB   SeeYou Waypoint (Naviter)
CDB   Giza Specifier Design File (20-20 Technologies)
CDB   The Cleaner Trojan Database (Moosoft Development LLC.)
CDB   Mactive AdBase Data (Mactive AB)
CDB   FreeOTFE Keyfile (Sarah Dean)
CDB   CardScan Database (Corex Technologies)
CDB   Clipboard File
CDB   Nokia 9210/9290 Phone Contact Database (Nokia)
CDB   One Page from a ROM With a View Project File
CDB   PowerDesigner Conceptual Model Backup File
CDB   SymbianOS Contact Database File
CDB   Turbo C Database (Borland Software Corporation)
CDB   Pocket Access Database (Microsoft Corporation)
CDBK   SPSS Database File
CDC   Nero CD Cover File (Nero AG)
CDC   Chromeleon Driver Configuration Plug-in
CDC   Canvastic Documnet/Drawing (Canvastic)
CDC   CLAN Debug File (Child Language Data Exchange System)
CDD   CD-Architect Driver File (Sonic Foundry)
CDD   CADAM Drawing (Dassault Systemes)
CDD   Chromeleon Device Driver
CDD   Claris Draw v 1.2 Document
CDD   Cadifra Diagram (Cadifra Inc.)
CDD   Balder Multiboot Configuration File (Hans Christian Ihlen)
CDD   Concept Draw Drawing/Diagram (Computer Systems Odessa, Corp.)
CDDA   AIFF Audio
CDDS   Midtown Madness 3 Data
CDE   Honeywell Hybrid Control Designer
CDE   CADKEY Dynamic Extension (Kubotek USA Inc.)
CDEV   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CDEVSAMPLES   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CDF   MicroSim PCBoard Component Description File For Bill Of Materials
CDF   ANDI/netCDF Mass Spectrometry Data Interchange format
CDF   Channel Definition Format (Microsoft Corporation)
CDF   Xilinx Integrated Software Environment Chain Description File (Xilinx, Inc.)
CDF   ASCII Format Describing VRML Worlds
CDF   InstallShield Components Definition File (Acresso Software Inc.)
CDF   Comma Delimited Format
CDF   CDF Player Computable Document Format (Wolfram)
CDF   Nominal Accounting Nominal Accounting (bsmArt Consulting)
CDF   Cyberspace Description Format
CDF   Unidata NetCDF Graphic File (University Corporation for Atmospheric Research)
CDG   DART Karaoke Studio CD+G File
CDG   CanoDraw Graph (Microcomputer Power)
CDI   Phillips Compact Disk Interactive Format
CDI   Disc Juggler CD Image File
CDI   CD Anywhere Virtual CD (V Communications, Inc.)
CDJ   Disc Juggler File
CDK   CD Katalog (KRISoftware)
CDK   Calamus Document (invers Software)
CDK   OS/2 Saved SKF Format File (IBM)
CDKEY   Protocol Used in Communicating from MediaRemote Server to PC MediaRemote Plug-in
CDL   CaseWare Working Papers Document Link
CDL   NetCDF CDL Metadata (Unidata)
CDL   CADKEY Advanced Design Language (CADL) (Kubotek USA Inc.)
CDL   CD Label Pro CD Label Pro Project
CDL   SignLab Vector Graphic
CDM   Visual dBASE Custom Data Module
CDM   Novell NetWare Disk Drivers NPA
CDM   PowerDesigner Conceptual Model File
CDM   Minolta Scanner 3D File (Minolta)
CDM   NTI CD&DVD-Maker Image File (NewTech Infosystems)
CDM   Compressed Music Format
CDMM   ConceptDraw MINDMAP Mind Map (Computer Systems Odessa Corporation)
CDMP   Windows Color System Device Model Profile (DMP) (Microsoft Corporation)
CDN   Click’N Design 3D CD Label (Avery Dennison Corporation)
CDO   CADAM Overlay (Dassault Systemes)
CDO   Cdo Navigator
CDP   Ca Visual Objects Platform for Developer (CAVO) (CA)
CDP   CD/Spectrum Pro
CDPRJ   CD Menu Creator Project File (Drackon Tech)
CDPX   ConceptDraw PROJECT Document (Computer Systems Odessa Corporation)
CDPZ   ConceptDraw MINDMAP Document (Computer Systems Odessa Corporation)
CDQ   CD Indexer
CDR   Sound File
CDR   Elite Plus Commander Saved Game
CDR   GameJack Virtual CD or DVD Image (S.A.D. GmbH.)
CDR   Corel Vector Graphic Drawing (Corel Corporation)
CDR   Final Cut Pro CD/DVD Image File (Apple Inc.)
CDR   Raw Audio-CD Data
CDRZIP   DICOM Zipped Image Archive
CDS   TrialDirector Input File (inData Corporation)
CDS   United States Postal Service Computerized Delivery Sequence
CDS   ChemDraw Stationery Document
CDS   Delphi TClientDataset Data (Borland Software Corporation)
CDSC   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CDSG   DrawMusic Chord Song (Conrad Albrecht)
CDT   ImgBurn CD-Text (LIGHTNING UK)
CDT   MRS-802 Album Data (Zoom Corporation)
CDT   STABCAL (stability calculation for aqueous systems) File
CDT   ProWORX Nxt Temporary Long Comment Data (Schneider Electric)
CDT   CorelDraw Template (Corel)
CDU   CDU Paint
CDV   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CDV   CatDV Media Catalog (Square Box Systems Ltd.)
CDW   KOMPAS Drawing (ASCON)
CDW   CeledyDraw Drawing (Celedy Software Inc.)
CDW   CADKEY Organized Dialog File (CADKEY)
CDX   Visual Foxpro Index (Microsoft Corporation)
CDX   Active Server Document
CDX   MicroStation Cell Library Index (Bentley Systems, Incorporated)
CDX   NovaBACKUP Backup Database Index (NovaStor Corporation)
CDX   iAnywhere Index File (Sybase, Inc.)
CDX   Alpha Five Table Index (Alpha Software, Inc.)
CDX   Compound Index
CDX   Corel Draw Compressed Drawing
CDX   ChemDraw Chemical Structure Exchange File (CambridgeSoft Corporation)
CDXL   Old Amiga Movie Format
CDXML   ChemDraw XML ChemDraw Format
CDZ   Cadenzo Music File (Heiko Hinz)
CDZ   ROM With a View Project File
CE   CA Clipper Workbench Application
CE   Computer Eyes, Digital Vision
CE   FarSide Computer Calendar File
CE1   Computer Eyes Raw Low Resolution Image
CE2   Computer Eyes Raw Medium Resolution Image
CE3   Calendar Creator 3.x 4.x Event List
CEA   ENVIS ENVIS (KMB Systems)
CEB   Apabi eBook
CEC   Colombia en Cifras Financial Archive (Lunasoft Colombia Ltda.)
CEF   CruzerLock Encrypted File (SanDisk Corporation)
CEF   CA Clipper Workbench Application
CEF   Class Action Gradebook Elementary Edition Data File (CalEd Software)
CEF   CenturionMail Encrypted File (CenturionSoft)
CEF   Spaix PumpSelector Catalog Exchange Format (VSX – VOGEL SOFTWARE GMBH)
CEG   Continuous Edge Graphic Bitmap (Edsun)
CEG   Tempra Show Bitmap Graphic
CEI   CRiSP Harvest File
CEL   Animator Graphic (Autodesk, Inc.)
CEL   CIMFast Event Language File
CEL   MicroStation Cell Library (Bentley Systems, Incorporated)
CEL   Lumena CEL Bitmap (Time Arts Software)
CEL   Audition Loop File (Adobe Systems Incorporated)
CEL   Celestia 3D Rendering Script
CEL   KiSS Paper Doll File
CEL2   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CELL   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CELLAR   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CELTIC   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CELX   Celestia 3D Rendering Script
CEM   Empire Earth Game File
CEM   Computer Graphics Metafile
CEN   Master Tracker Financial Analysis
CEO   Extension associated with Winevar Worm
CEP   CostOS Estimating Project Database File (Nomitech Unlimited)
CER   Sierra Print Artist Certificate
CER   Cerius2 (Accelrys Software Inc.)
CER   Creatacard Certificate Project (Broderbund)
CER   Lahey Fortran Compilation Error Messages
CER   Internet Security Certificate File
CER   MSI Cerius II Chemical Format File (Accelrys Software Inc.)
CES   Sheffield Dictionary File
CEV   LOUT Character Encoding File
CEV   Software License Tracking Tool
CEX   INMOS Transputer Development System Occam User Program
CEX   ThumbsPlus File
CEX   The Currency Exchanger Rate File
CEX   CLAN Output File (Child Language Data Exchange System)
CF   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CF   Imake Configuration File
CF   CFwin Project Data (Procedimientos-Uno, S.L.)
CF   Sendmail Configuration File
CF1   Common File Format 1
CF2   Common File Format 2
CF4   Catfish File Manager Support File
CFA   Premiere Pro Audio File (Adobe Systems Incorporated)
CFB   Comptons Multimedia File
CFB   Inmos Binary Configuration File
CFC   Cold Fusion Component File (Adobe Systems Incorporated)
CFD   CryptoForge Document (Ranquel Technologies)
CFDG   Context Free Design Grammar
CFE   CryptoForge Encrypted File (Ranquel Technologies)
CFF   Common File Format
CFF   BoomTracker 4.0
CFF   Capabilities File for FOUNDATION Fieldbus H1
CFG   Flight Simulator Aircraft Configuration File (Microsoft Corporation)
CFG   Configuration
CFG   Pro/ENGINEER Configuration (PTC)
CFG   Proxomitron Configuration File (Scott R. Lemmon (deceased))
CFH   Capabilities File for FOUNDATION Fieldbus HSE
CFI   CleverForm Script File (Code Development Ltd.)
CFIG   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CFK   MS Developer Studio Diagram
CFK   Kardplay 1.62 File
CFL   Developer Studio Diagram (Microsoft Corporation)
CFL   Corel Flowchart File
CFL   Compressed File Library File (Compressed File Container)
CFM   Cold Fusion Template File
CFM   Corel FontMaster
CFM   Visual dBASE Windows Customer Form
CFML   Cold Fusion Markup Language
CFN   Calamus Font Data (invers Software)
CFO   Turbo C (Borland Software Corporation)
CFO   TCU Turbo C Utilities C Form Object
CFP   QuickBooks Cash Flow Projector File (Intuit Inc.)
CFP   Complete Fax Portable Fax File
CFR   IBM Configurator Report
CFR   NRC Inspection Manual CFR Guidance
CFS   ChatFactory Script (ChatFactory Team)
CFS   Inmos Configuration File
CFS   Signal Data (Cambridge Electronic Design Limited)
CFT   Flow Chart; Corel Flow Template
CFT   Cumberland Family Tree
CFT   Animation Studio CFast Graphics File (Disney)
CFW   ChemFinder Form
CFX   Creative DSP File
CFX   Flow-Cal File
CFX   Casio Algebra FX 2.0 Add-in (Casio Computer Co., Ltd.)
CG   Norton Crashguard File
CG   Chord Groover Guitar Song (Guitartab.co.uk)
CG   Cg Toolkit Shader (NVIDIA Corporation)
CG3   Cabri 3D License File (CABRILOG SAS)
CG3   Dungeons & Dragons Character File (Wizards of the Coast, Inc.)
CGA   Ventura CGA Screen Characters
CGA   Color Graphics Adapter Graphics Data
CGA   CGA Resolution BMP Bitmap
CGB   Gameboy Color
CGF   ProWORX Nxt CODEGEN Batch File (Schneider Electric)
CGF   Egrid32 Grid Format File (Elias Montoya)
CGF   Asm Objasm
CGF   Family Tree Creator Deluxe (Broderbund)
cgi   Common Gateway Interface Script
CGL   CodeGuard Error Log
CGM   Computer Graphics Metafile [New Style]
CGM   Computer Graphics Metafile [Old Style]
CGO   Railroad Tycoon 3 Car Properties (PopTop Software Inc.)
CGP   PixelCryptor Package File (CodeGazer)
CGP   DVDFab Change Graphic Picture (Fengtao Software Inc.)
CGP   NetCaptor CaptorGroup (Stilesoft, Inc.)
CGR   CATIA Drawing (Dassault Syst鑝es)
CGR   Quest3D Program Part (Act-3D B.V.)
CGT   GOLD Parsing System Table (Devin Cook (and Contributors))
CH   String Data Storage (Encrypted)
CH   Clipper Header
CH   OS/2 Configuration File
CH   String Data Storage
CH1   ViewChoice (Payroll Associates, LLC)
CH1   Freelance Graphics CHart (IBM)
CH10   IRIG 106 Original Recording File (Range Commanders Council)
CH3   Harvard Graphics Chart (Harvard Graphics)
CH4   Charisma 4.0 Presentation
CHA   PageMaker Kerning Data (Adobe Systems Incorporated)
CHA   Challenger Encrypted File (it-com4)
CHA   Character Data
CHA   CLAN Frequency Sample File (Child Language Data Exchange System)
CHA   mIRC Chat File
CHANG   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHANGE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHANGELOG   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHANGER   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHANGES   Squeak Change File
CHANGES   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHAR   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHAR1   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHAR2   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHAR3   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHAR4   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHARSET   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHART   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHART2   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHAT   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHAT   PIRCH98 Chat File
CHATLOG   Adium Chat Log (Adium Team)
CHB   Oledb Checkbook File
CHD   ViewChoice (Payroll Associates, LLC)
CHD   Ares Font Chameleon Font Descriptor
CHD   MAME Compressed Hard Disk File (MAME Team)
CHD   ChartFX File
CHE   CHwinEHE Control Data (Procedimientos-Uno, S.L.)
CHEAT   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHEAT   The Sims Custom Settings (Electronic Arts, Inc.)
CHEATS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHECK   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHECKER   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHESSREV   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHESSTITANSSAVE-MS   Chess Titans Saved Game File (Microsoft Corporation)
CHF   pcAnywhere Remote Control File
CHG   Quicken On-line Data File (Intuit Inc.)
CHG   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHGR   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHH   C++ Header
CHI   Help File Index (Microsoft Corporation)
CHI   ChiWriter Document
CHI   TOMBO Encrypted File (Tomohisa Hirami and TOMBO Maintainers)
CHIME   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHIMES   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHJ   Help Composer Project
CHK   CHKDSK/SCANDISK Output
CHK   Sophos Intercheck File
CHK   3D Movie Maker Interface Data File (Microsoft Corporation)
CHK   WordPerfect Temporary File (Corel Corporation)
CHK   Blue Coat ProxySG ProxySG Image File (Blue Coat Systems Inc)
CHK   SSConvert Multilanguage Video Subtitle Data (Screen Subtitling Systems Ltd.)
CHK   EpiData Check File (EpiData Association)
CHK   Starcraft Campaign Map
CHKEXP   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHKJAIL   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHL   Chile Compressed File
CHL   Black and White 2 Game Data Script (Lionhead Studios)
CHL   Configuration History Log
CHL   RealPlayer Live Channel
CHL   Internet Explorer Channel Information (Microsoft Corporation)
CHL   ConTEXT Highlighter (ConTEXT Project Ltd.)
CHL   Chromeleon Channel Raw Data
CHM   Ares Font Chameleon Source Font – Font Outline
CHM   ChemDraw Chemical Structure (CambridgeSoft Corporation)
CHM   HTML Help Compiled Help File (Microsoft Corporation)
CHN   Ethnograph Data File
CHO   Chord Pro Song Format (Mussoft)
CHO   Ares Font Chameleon Output Font
CHO   Animation:Master Choreography (Hash)
CHOICE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHOOCHOO   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHOPIN   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHOPPER   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHOPRO   Chord Pro Song Format (Mussoft)
CHOR   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHORALE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHORD   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHORDHARM   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHORDPIANO   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHORES   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHORUS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHP   DVD Chapter File
CHP   CodeHealer Project File (SOCK Software, LLC)
CHP   FLOWer (Pallas Athena)
CHP   BizInt Smart Charts for Patents Document (BizInt Solutions)
CHP   Ventura Publisher Chapter (Corel Corporation)
CHQ   Help Combined Full-text Search File (Microsoft Corporation)
CHR   Wormhole 2.0/ Liero Graphics Editor Liero Graphics Mod
CHR   Infinity Game Engine Exported Character Info (BioWare Corp.)
CHR   Borland Language Stroke Font File (Borland Software Corporation)
CHR   Character or Font File
CHRISTMAS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHROMAFONT   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHS   ChessRally Saved Game/E-mail Attached Game (Ingenuware, Ltd.)
CHS   Corel WP Chart Style
CHS   ATI Radeon Video Driver
CHT   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHT   ICQ Saved Chat Session (ICQ Inc.)
CHT   ChartViewer dBASE Interface File
CHT   ChartFX Template File
CHT   My Health Software Chart (My Health Software)
CHT   Navigator Vector Chart File (Tecepe)
CHT   BizInt Smart Charts for Drug Pipelines Document (BizInt Solutions)
CHT   Cheat Machine Data File
CHT   SPSS Template (SPSS, Inc.)
CHT   Sierra Generations Family Tree Chart (Sierra Entertainment, Inc.)
CHT   ZSNES Cheat Code (ZSNES Team)
CHT   Novagraph Chartist File
CHT   Harvard Graphics Vector File (Harvard Graphics)
CHT   Chartist from Novagraph
CHU   Infinity Game Engine GUI Elements File (BioWare Corp.)
CHURCH   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CHUZZLEDELUXESAVEDGAME   Chuzzle Deluxe Saved Game (PopCap Games, Inc.)
CHW   HTML Help General Index Funtionally comparable to .GID.
CHX   ZX-Editor Second Edition Big Font Files (OmikroN-Software)
CHZ   ChArc Compressed File Archive
CI   I Script (Caglow)
CI   CitectSCADA File
CI2   Calin Lawyer’s Interest Calculator Ver 2 Data File (Lawtech (Aust) Pty Ltd.)
CI3   Calin Lawyer’s Interest Calculator Data File (Lawtech (Aust) Pty Ltd.)
CIA   Sheffield Dictionary File
CID   CallerID File (AnalogX)
CID   coDiagnostiX User Defined Implant (IVS Solutions AG)
CID   Navigator Chart Image Description (Tecepe)
CIDA   xplorer� Scrap File Document (Nikos Bozinis)
CIDF   Creative ID Document File (Creative ID Software)
CIF   Easy CD Creator Image (Sonic Solutions)
CIF   Colombo Ipermedia File
CIF   Chip Layout Information
CIF   Ariba Buyer Catalog Information Format (Ariba Inc.)
CIF   CalTech Intermediate Graphic
CIF   Crystallographic Information File
CIF   Ventura Converted Image File
CIF   Creator Document File (MultiAd, Inc.)
CIF   Ventura Chapter Information
CIF   pcAnywhere Caller File
CIG   Fastback Plus Compressed Backup
CIK   Corel Graphics Ver. 10 Custom Dual Tone File (Corel)
CIK   Norton CleanSweep Installation Log (Symantec Corporation)
CIL   Norton CleanSweep Installation Log (Symantec Corporation)
CIL   Clip Gallery Download Package (Microsoft Corporation)
CIM   SimCity 2000 (Electronic Arts, Inc.)
CIM   CIMEX Cimpack Design Drawing File
CIM   CompuApps Drive Backup Image
CIM   The Ultimate Draw C Text Mode Image File
CIM   GE Industrial Systems CIMPLICITY HMI Screen
CIN   Cineon Bitmap (Kodak)
CIN   Digital Moving Picture Exchange Bitmap (The Society of Motion Picture and Television Engineers)
CIN   Cinetitler Digital Screen Subtitling
CIN   Cinemania (Microsoft Corporation)
CIN   Calculux Indoor Project (Royal Philips Electronics)
CIN   Quake II Cinematic Video (id Software)
CIN   OS/2 Change Control File
CIN   Photo-Sonics Picture Sequence
CIN96LM   See .CIN
CIN96UPD   See .CIN
CIP   Ghost Keylogger File
CIP   CryptoBuddy Encrypted File (Research Triangle Software)
CIPO   Internet Same as .CPI.
CIQ   CableIQ Test Data (Fluke Networks)
CIR   PSpice Circuit File (Cadence Design Systems, Inc.)
CIR   real-PCB Netlist (Crocodile Clips Ltd)
CIR   SuperMax E-CAD Save-File Command
CIRCLES   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CIS   TAPCIS Parameter/Address Book/Rates File
CIS   CheckInbox File
CISO   Pismo File Mount Package Compact ISO
CIT   Intergraph Scanned Image (Intergraph Corporation)
CIT   Norton CleanSweep Installation Log (Symantec Corporation)
CIT   SeeYou Vector Maps (Naviter)
CIT   ClockIt Employee Duty Roster (ES-Software.net)
CITY   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CIV   Empire Earth Custom Civilization Information (Sierra Entertainment, Inc.)
CIV4REPLAY   Civilization IV Replay File (Firaxis Games, Inc.)
CIV4SAVEDGAME   Civilization IV Saved Game (Firaxis Games, Inc.)
CIV4WORLDBUILDERSAVE   Civilization IV Saved World Builder Data (Firaxis Games, Inc.)
CIX   Rational XDE (IBM)
CIX   TCU Turbo C Utilities Database Index
CJB   cleaner XL Job (discreet (an Autodesk Company))
CJP   WinOnCD Project File (Sonic Solutions)
CK   ChucK Source Code (ChucK Team)
CK1   iD/Apogee Commander Keen 1 Data File
CK2   iD/Apogee Commander Keen 1 Data File
CK2   iD/Apogee Commander Keen 2 Data File
CK2   ViewChoice (Payroll Associates, LLC)
CK3   iD/Apogee Commander Keen 1 Data File
CK3   iD/Apogee Commander Keen 3 Data File
CK4   iD/Apogee Commander Keen 1 Data File
CK4   iD/Apogee Commander Keen 4 Data File
CK5   iD/Apogee Commander Keen 5 Data File
CK5   iD/Apogee Commander Keen 1 Data File
CK6   iD/Apogee Commander Keen 6 Data File
CK6   iD/Apogee Commander Keen 1 Data File
CKA   Comfort Keys Database (Comfort Software Group)
CKB   C++ Keyboard Mapping File (Borland Software Corporation)
CKD   CADKEY Workshop Design File (Kubotek USA Inc.)
CKD   KeyCreator Design Container File (Kubotek USA Inc.)
CKF   Music Data Management Software Casio Keyboard File (Casio Computer Co., Ltd.)
CKI   Off by One Browser Persistent HTTP Cookies (Off By One Productions, a division of Home Page Software Inc.)
CKO   KnockOut 2 Image Mask (Corel)
CKP   Ingres Checkpoint File (Computer Associates International, Inc.)
CKP   Valise Secure Archive (CertainKey, Inc.)
CKT   Crocodile Clips
CKT   CircuitMaker Schematic (Altium Limited)
CKT   B2 Spice Curcuit Design (Beige Bag Software, Inc.)
CKT   KeyCreator Template File (Kubotek USA Inc.)
CKV   CheckVision Database (CheckVision GmbH)
CKX   ChucK Plug-in (ChucK Team)
CKY   DSOrganize DSOrganise (Dragon Minded)
CL   Generic LISP Source Code
CL   CLwin Project Data (Procedimientos-Uno, S.L.)
CL   ArtIcons Pro Cursor Library (Aha-soft)
CL3   Bruker Aspect NMR Data File
CL3   Easy CD Creator Layout File (Sonic Solutions)
CL4   Easy CD Creator Ver 4 Layout File (Sonic Solutions)
CL5   Easy CD Creator Layout File (Project) (Sonic Solutions)
CLA   CLASS336 Markup Language
CLA   Java Class File (Sun)
CLA   Clarion for DOS Source Code (SoftVelocity)
CLAP   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CLASS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CLASS   Java Class File (Sun Microsystems, Inc.)
CLASS   Java Bytecode (Sun Microsystems, Inc.)
CLASS   Gambas Gambas Class Source File (Gambas Team)
CLB   ICQ Contact List (ICQ Inc.)
CLB   cdrLabel Compact Disc Label
CLB   Super NoteTab ClipBook Template
CLB   Corel Library
CLB   Office XP Developer Code Librarian (Microsoft Corporation)
CLB   COM+ Catalog File
CLB   Total Club Manager Single Club Info (Electronic Arts Inc.)
CLBX   MP3 Automagic CD Cover Creator (MACCC) Label (Brian Pipa and PipaSoft)
CLC   Schedule+ 7-Habits Mission Statement (Microsoft Corporation)
CLC   UltimaCalc Calculation Data File (UltimaCalc)
CLC   Corel Catalog
CLD   CD-Label Print Label Layout File (Canon, Inc.)
CLD   Skerryvore Software Simply Calenders
CLD   CD Label Designer Design File (Dataland Software)
CLD   ClamWin AntiVirus Database (Clam AntiVirus Team)
CLD   Clam AntiVirus Database (Clam AntiVirus Team)
CLD   Terragen Cloud Layer File (Planetside Software)
CLD   CA Clipper Debugger Configuration File
CLDLYR   Terragen Cloud Layer File (Planetside Software)
CLE   Icon Lock-iT Locked File Indicator (Moon Valley Software, Inc.)
CLEAN   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CLEANER   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CLEAR   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CLEARANCE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CLF   ListPro Database (Ilium Software, Inc.)
CLF   DesignWorks Symbol Library (Capilano Computing)
CLG   Disk Catalog Database
CLG   CollageMaker Graphic (Galleria Software)
CLG   Maxagrid CTM Log File
CLI   Client Management System Customer File (HawkSoft, Inc.)
CLICK   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CLIP   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CLIP1   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CLIP2   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CLJ   Clojure Source Code (Rich Hickey, Open Source Project Sponsor)
CLK   R.A.V.E. Animation File (Corel)
CLK   WatchGuard Cloaked File (WatchGuard Technologies, Inc.)
CLK   ClickFORMS Data (Bradford Technologies Inc.)
CLKK   Clicker Keyboard (Crick Software Ltd.)
CLKT   Clicker Template (Crick Software Ltd.)
CLKW   Clicker Word Bank (Crick Software Ltd.)
CLKX   Clicker Grid Set (Crick Software Ltd.)
CLL   OzWin CompuServe E-mail/Forum Access Custom Library Search
CLL   Clicker (Crick Software Ltd.)
CLM   Micrografx Picture Publisher 7 Macro
CLMOV   Clan Lord Movie – Visiostone (Delta Tao Software)
CLN   Backup Configuration File
CLO   Cloe Ray-Tracer
CLO   SPSS Chart Look (SPSS, Inc.)
CLOCK   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CLOE   Cloe Ray-Tracer
CLOG   SpreadMaster Client Log (SpreadMaster.net)
CLOSED   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CLOUD   GOM Atos Scanner File
CLOUD   Homeworld Cloud Data (Sierra Entertainment, Inc.)
CLP   CLIPS/wxCILPS File
CLP   DeskMate Clip
CLP   Quattro Pro Clip Art (Corel)
CLP   Windows Clipboard/Picture
CLP   Clipper 5 Compiler Script
CLP   GoDot
CLP   PC Paint/Pictor Picture
CLPI   Blu-ray Clip AV Stream File (Blu-ray Disc Association)
CLR   Flash Color Table File (Adobe Systems Incorporated)
CLR   Boxer/2 Color Scheme
CLR   1st Reader Binary Color Screen Image
CLR   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CLR   Vue Color Maps (e-on software, inc.)
CLR   WinMX Color Scheme (Frontcode Technologies)
CLR   PhotStyler Color Definition
CLR   WinEdit Colorization Word List
CLR   FileMaker Spelling Dictionary
CLS   C++ Class Definition
CLS   Visual Basic Class Module
CLS   ArcView Geocoding Classification File (ESRI)
CLS   JavaScript Class
CLS   MS VisC++/Visual Basic Class Definition
CLS   MS VB-4 Class Module Add-In
cls   LaTeX Class Definitinon
CLT   VisualBoyAdvance Cheat List (Forgotten and VBA Team)
CLU   IBM PCI Cryptographic Coprocessor Code File (IBM)
CLU   CLUCalc Geometric Algebra Description (CLUScript File) (Christian Perwass)
CLU   Phantasmagoria 2 8-bit Playback Pallete File
CLU   XNBC V8 Biological Neural Network Simulation Workstation Cluster Names
CLU   Broken Sword 2 Dialog File (THQ Inc.)
CLU   Clusse Node File (Heikki Hannikainen)
CLUB   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CLUBS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CLV   Clovis for Outlook Schema Settings (Steelhead Systems)
CLV   Vbox Current Language File (Aladdin Knowledge Systems)
CLV   Yamaha Cool Voices (Yamaha Corporation of America)
CLW   Visual C++ Class Wizard File (Microsoft Corporation)
CLW   Clarion for Windows Source Code (SoftVelocity)
CLX   Macro ToolsWorks Macro
CLX   Acrobat (Adobe Systems Incorporated)
CLX   Ceelox SecureMail Encrypted Document (Ceelox Inc.)
CLX   Rational XDE (IBM)
CLY   Corel Graphics Ver.10 Custom Layouts File (Corel)
CLY   ACT! Layout (Best Software CRM Division)
CL_   C Poet compressed Disk1 File
CM   Unix Puzzle 8-bit Bitmap
CM   CopyMinder Contains the secure code that performs a copy protection check (Microcosm)
CM   Craftman Data File
CM1   CaseMap Version 1.x Case Analysis File (LexisNexis)
CM2   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CM2   CaseMap Version 2.x Case Analysis File (LexisNexis)
CM2   Curious Labs Poser Camera File
CM3   CaseMap Version 3.x Case Analysis File (LexisNexis)
CM4   CaseMap Version 4.x Case Analysis File (LexisNexis)
CM4   ClipMate Data File
CM4   Championship Manager 4 Saved Game (Sports Interactive Ltd.)
CM5   CaseMap Version 5.x Case Analysis File (LexisNexis)
CM6   CaseMap Version 6.x Case Analysis File (LexisNexis)
CM7   CaseMap Version 7.x Case Analysis File (LexisNexis)
CMA   Camomile Library File
CMA   Coach 6 Activities File (Foundation CMA – Centre for Microcomputer Applications)
CMA   Filetopia Collection Manager List (Filetopia)
CMA   Applix TM1 Database
CMAP   CmapTools Concept Map (IHMC)
CMAP   Hex Workshop Color Map File (BreakPoint Software, Inc.)
CMB   Reason Combinator Instrument Patch (Propellerhead Software)
CMB   Xtree for Windows Button Bar
CMB   Chromeleon Backup Archive
CMBL   Logger Pro Data (Vernier Software & Technology)
CMBX   #develop (SharpDevelop) Combine File (IC#Code)
CMC   PowerFront File
CMC   Collectorz.com Comic Collector Collection Data (Collectorz.com)
CMD   Summit Contact Manager Contact Database (MIE Software Pty Ltd)
CMD   Command File for Windows NT (Microsoft Corporation)
CMD   OS/2 REXX Batch File
CMD   OS/2
CMD   DOS CP/M Command File
CMD   dBASE II Program File
CMD   PDP-10 Indirect Command File
CMD   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CMD   1st Reader External Command Menu
CMD5   CrystalMaker Data (CrystalMaker Software Ltd.)
CMDF   CrystalMaker Data (CrystalMaker Software Ltd.)
CMDR   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CME   Crazy Machines Level File (Pepper Games)
CMF   Corel Metafile
CMF   CopyMate Data File (GraphiTech Ltd.)
CMF   Connection Manager Fixer File
CMF   CaseMap File Viewer Definition (LexisNexis)
CMF   Creative Music File
CMF   MapPoint 2006 Map File (Microsoft Corporation)
CMG   cramfs ROM Filesystem Package
CMG   Chessmaster Saved Game (Ubisoft Entertainment)
CMI   CD Mate CD Burning Image File (An Chen Computers Co. Ltd.)
CMI   Camomile Interface File
CMK   Card Shop Plus File
CML   Filetopia Collection Manager List (Filetopia)
CML   Crazy Machines Saved Laboratory File (Pepper Games)
CML   PADGen Company Info File
CML   ProWORX Nxt Comment Data (Schneider Electric)
CML   Chemical Markup Language Document
CML   Cheat Machine Library File
CMM   CEnvi (ScriptEase:Desktop) Batch File
CMMF   CrystalMaker Data (CrystalMaker Software Ltd.)
CMMP   Camtasia Studio Menu Maker Project (TechSmith Corporation)
CMMTPL   Camtasia Studio Menu Maker Template (TechSmith Corporation)
CMN   Systems Management Server (SMS) Collection Membership Update (Microsoft Corporation)
CMN   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CMO   Virtools Behavioral Server Composition
CMO   Spanish Whiz What Did You Say? Sound File (GB Blanchard)
CMP   Freelancer Physical Model Layout (Microsoft Corporation)
CMP   Microsoft Sharepoint Microsoft Sharepoint (Microsoft Corporation)
CMP   HotDocs Template Component File (Matthew Bender & Company, a member of the LexisNexis Group)
CMP   Discorp CMP Image
CMP   Leadview (LEAD) Bitmap
CMP   Internet Explorer Custom Menu Plug-in (Microsoft Corporation)
CMP   Open Access File
CMP   Photofinish Calibration MaP
CMP   PKWare Compression Library Compressed Data
CMP   Route 66 Address Document
CMP   CraftMan Data
CMP   SWAT 3 Compressed Sound File
CMP   Giza Specifier Color Map (20-20 Technologies)
CMP   Chord Pro Song Format (Mussoft)
CMP   Word for DOS User Dictionary (Microsoft Corporation)
CMP   Generic CADD Component File
CMP   CaseMap Send To TimeMap Plug-in (LexisNexis)
CMP   Technics Keyboard Composer File
CMP   CorelDRAW Postscript Printer Header
CMP   THEOS Compressed Archive (THEOS Software Corporation)
CMP   Address Document
CMP   JPEG Bitmap
CMPRB   CaseMap ReportBook Plug-in (LexisNexis)
CMPROJ   Channel Master Project (SharpC Consulting Group)
CMPT   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CMQ   Culturemetrics
CMR   CribMaster File
CMR   MediaPlayer Movie
CMR   SeeYou Raster Maps (Naviter)
CMR   Coach 6 Saved Results File (Foundation CMA – Centre for Microcomputer Applications)
CMRBK   CaseMap ReportBook Definition (LexisNexis)
CMRT   CraftMan Data
CMS   TrialDirector Case File (inData Corporation)
CMS   TrialDirector Compound Media Storage
CMS   CaseMap Case Script (LexisNexis)
CMS   Coach 6 Project File (Foundation CMA – Centre for Microcomputer Applications)
CMT   e-Sword Commentary (Rick Meyers)
CMT   Chinon ES-1000 Digital Camera
CMT   Culturemetrics
CMT   Corel Draw
CMTD   Cool Moon To Do To Do List (Cool Moon Software, LLC.)
CMU   Andrew Toolkit CMU Format (Andrew Consortium)
CMU   CMU Window Manager Bitmap
CMU   Carnegie Mellon Univeristy Stereo Raster Image
CMUWM   Carnegie Mellon University (CMU) Window Manager Bitmap
CMV   Creative Zen/Centrale Media Player Video File (Creative Technology Ltd.)
CMV   CorelDRAW 4.0 Movie Animation (Corel Corporation)
CMW   COM-Watch
CMW   Custom Maintenance Wizard File (Microsoft Corporation)
CMX   Qualcomm CMX Ringtone
CMX   Patch File
CMX   The Sims 3D Body Mesh Data (Electronic Arts (Maxis))
CMX   Apple Viewer (Apple Inc.)
CMX   Rational XDE (IBM)
CMX   Presentation Exchange Image (Corel)
CMXA   Camomile Packed Library File
CMY   Corel40 Custom File
CMYK   Raw Cyan, Magenta, Yellow, and Black Samples
CN   CNwin Project Data (Procedimientos-Uno, S.L.)
CNA   Catena Data File (OpEx Software LLC)
CNB   Pegasus Mail Mail Message in Noticeboard (David Harris)
CNC   Click ‘n Create File (Clickteam)
CNC   CNC General Program Data
CNC3REPLAY   Command & Conquer 3 Replay (Westwood Studios)
CND   Embroidery Design File
CND   ControlDraw File
CNDF   Compressed Channel Data File Contains data about satellite TV channels.
CNF   minisat or ubcsat Connective Normal Form Logic Equations (SATLIB – The Satisfiability Library)
CNF   1-2-3 Configuration (IBM)
CNF   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CNF   Windows SpeedDial (Microsoft Corporation)
CNF   Inor MinIpaq Software File
CNF   Conference Link
CNF   Configuration File Used by Telnet, Windows, and other applications with varying internal formats.
CNF   KiSS Paper Doll Set
CNM   NoteMap Outline File (LexisNexis)
CNM   Windows Application Menu Options and Setup File
CNM   Pegasus Mail New Mail Message (David Harris)
CNM   WinRoute Electronic Mail File (Kerio Technologies Inc.)
CNQ   Compuworks Design Shop File
CNQ   WebShop Platinum Project File (Boomerang Software, Inc.)
CNR   Click’N’Run Installation Package (Linspire,Inc.)
CNR   Pegasus Mail Mail Message in Systemwide Folder (David Harris)
CNR   CRiSP Harvest File
CNREG   EULANDA Warenwirtschaft (ERP) Configuration Information
CNREP   EULANDA ERP System Report Template
CNS   Windows2000 Client Connection Manager Export File (Microsoft Corporation)
CNT   Rational Rose 98 Contents Tab File (IBM)
CNT   Help File Contents
CNV   WS_FTP Pro Upload Conversion File Data
CNV   WordPerfect Temporary File (Corel Corporation)
CNV   DB2 Conversion File
CNV   Canvas Versions 6, 7, 8, 9 Graphic File (ACD Systems Ltd.)
CNV   Word Data Conversion File (Microsoft Corporation)
CNX   Rational XDE (IBM)
CN_   Regeditx File
CO   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CO   Cult3D ActiveX Player Application (Cycore Systems AB)
CO   Cobalt v8 3D file (Ashlar-Vellum)
CO$   MS Compressed COM Decompress with UNPACK.EXE.
COA   Medlin Accounting Chart of Accounts With Beginning of Year Balances (Medlin Accounting)
COA   TrueSpace 3D Object (Caligari Corporation)
COB   RM/COBOL Runtime System Application File (Liant)
COB   TrueSpace Object (Caligari Corporation)
COB   COBOL Program File
COB   Total Annihilation Unit Script (Cavedog Entertainment)
COB   Creatures Compiled Object File (Gameware Development Ltd.)
COB   TrueSpace2 Object
COBRA   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COCO   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COD   FORTRAN Compiled Code
COD   Agent Charmap (Fort�)
COD   Compiler Program Code
COD   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COD   Forecast Plus
COD   dBASE Template Source File
COD   Video Text File
COD   Code List
COD   Multiplan Data File (Microsoft Corporation)
COD   StatPac Gold Datafile
COD   Charset Code File
COD   SWAT Input Control File
COD   UUPC Code Definition Table
COD   C Compiler Output (Microsoft Corporation)
COD   Boxer/2 printer Code Definition File
COD   dBASE Application Generator Template Source File
COD   Blackberry Compiled Java Code (Research In Motion Limited)
COD   Atlantis Word Processor Encrypted Document (Rising Sun Solutions, Inc.)
CODE   Graal and Related Servers Encrypted Cache (Cyberjoueurs)
CODE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CODE0   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CODE1   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CODE2   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CODE3   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CODE4   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CODEC   Rockbox CODEC (The Rockbox Crew)
CODES   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COF   Days Of Death Program/Media Saved Information (ColemanSystems)
COK   Carmageddon Patch File
COKE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COL   Notes Import Column Description File (IBM)
COL   Movie Maker Collection File (Microsoft Corporation)
COL   HTML Help Collection File (Microsoft Corporation)
COL   SequoiaView Color Template (Technische Universiteit Eindhoven)
COL   IFF Color Map Palette
COL   Grand Theft Auto III Collision Data (Rockstar Games)
COL   Internet Color Wizard Color Scheme
COL   Multiplan Spreadsheet (Microsoft Corporation)
COL   Autodesk Color Palette (Autodesk, Inc.)
COL   MPEG Audio Collection Collection (The MAC Team)
COL   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COLA   Cola Source Code (The Perl Foundation)
COLLAPSE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COLLECTION   Shareaza Collection (Shareaza Pty. Ltd.)
COLLOQUYTRANSCRIPT   Colloquy Chat Transcript (Javelin.cc)
COLOGNELA   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COLOR   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COLOR   Amaya Configuration
COLOR2   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COLORS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COM   EICAR Anti-Virus Test File (EICAR)
COM   Command
COM   DOS or CP/M Executable
COM   Psion Organiser CommsLink Setup File (Psion PLC)
COM   Common Object Module
COM   AOL (America Online, Inc.)
COM   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COM2   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COMBAT   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COMFYCAKESSAVE-MS   Purble Place Saved Game (Microsoft Corporation)
COMICSCARTOON   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COMING   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COMMANDLINE   Commandline Powertoy File
COMMANDS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COMMANDS2   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COMMENTS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COMMON   MATLAB Install File (The MathWorks, Inc.)
COMMS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COMPACT   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COMPANY   Chris Sawyer抯 Locomotion Company Owner Face (Atari Interactive, Inc.)
COMPARE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COMPARISON   Merge Comparison Report (Araxis Ltd.)
COMPAT   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COMPAT   Likely a Text File
COMPILERS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COMPLICATIONS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COMPOSER   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COMPPIANO   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COMPRESSION   Dreamweaver Web Compression (WordCompress.net)
COMPRESSOR   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CON   LucasArts Container File (LucasArts Entertainment Company LLC)
CON   Train Simulator Train/Model Identification File (Microsoft Corporation)
CON   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CON   Tree Professional Conifer Creator File
CON   Concept Application Server Source Code (RadGs Software s.r.l)
CON   Simdir Configuration File
CON   Trace Data File (GraphiTech Ltd.)
CON   Knowledgeware Consolidation File
CON   WordPerfect Document Concordance (Corel Corporation)
CON   Battlefield 1942 Configuration File (Electronic Arts, Inc.)
CON   Unreal 2 Audio File (Epic Games, Inc.)
CONCERTO   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CONF   Psitree psitree Router Configuration File
CONF   Palace Server Server Configuration (Communities.com)
CONF   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CONF   IRC Related Configuration File
CONF   Linux Configuration File
CONFERENCE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CONFIDENT2   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CONFIDENTIAL   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CONFIG   WatchDirectory Task Information (GdP Software)
CONFIG   Rockbox Configuration File (The Rockbox Crew)
config   UNIX Configuration File
CONFIG   CRiSP Harvest File
CONFIG   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CONFIG   NET Application Configuration Information (Microsoft Corporation)
CONFIGDBLINK   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CONFIGS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CONFIGURE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CONNECTION   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CONSEQUEN   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CONSOLE   WinNT Console File
CONSOLE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CONT   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CONTACT   Windows Vista Contact File (Microsoft Corporation)
CONTENTS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CONTENTSONCLIPBOARD   Contents on Clipboard Powertoy File
CONTROL   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CONTROL   Hydrologic Modeling System (HEC-HMS) Control Specifications Data (U.S. Army Corps of Engineers)
CONTROLPANEL   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CONV   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CONV   Stylus Studio Data Conversion Template (DataDirect Technologies, a division of Progress Software Corporation)
CONVERSIONS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CONVERT   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CONVERT2   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CONVERTER   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COO   Fabasoft Components
COO   Cookie File
COOKIES   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COOL   QB – Text Analyzer Archive (Sierra Vista Software)
COP   Tree Professional Conifer Creator Image File
COPIER   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COPIEREC   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COPPER   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COPY   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COPYING   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COPYR   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COR   WMOVIEC Input File
COR   Web GPS Correction Server Export File
COR   Cokriging Software COREG Output File
COR   Protein Structure File
COR   Insight II Output Coordinate File (Accelrys Software Inc.)
COR   posem Correction File (Nimal Solutions Ltd.)
CORE   Core Software Tech CORE IDC Bitmap
CORELPROJECT   Photo Album Project (Corel Corporation)
CORELSHOW   MediaOne Enhanced Slideshow File (Corel Corporation)
CORRECT   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CORRECTION   As-U-Type Correction FIle (Fanix Software)
CORTOUCHKA   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COS   Scarlett Expert System Compiler Query File
COS   Creatures Object Source (Gameware Development Ltd.)
COS3   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COSMO   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COSMO2   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COSMO3   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COSMO4   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COSMO5   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COSTS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
COT   Intergraph Raster Graphic (Intergraph Corporation)
COUNT   Gen Counters File
COUNTER   Netobjects Fusion Components Bbscomp Message File
COV   Fax Cover Page (Microsoft Corporation)
COX   Multimedia Fusion Plug-In (Clickteam)
CP   CPIde Component Pascal Source (CFB Software)
CP   Audition Script (Adobe Systems Incorporated)
CP   Xcode C++ Source (CodeWarrior/XCode) (Apple Inc.)
CP   Sound Shared File
CP   CompuMedic Database
CP1   Compel Show Ver 1 Presentation (Click2learn, Inc.)
CP2   Compel Show Ver 2 Presentation (Click2learn, Inc.)
CP8   CP8 256 Gray Scale Image
CP?   LoseThos C+ Source File (Terry A. Davis)
CPA   Premiere Conformed Audio File (Adobe Systems Incorporated)
CPA   Colasoft Capsa
CPA   Cimrex Prog (Beijer Electronics)
CPA   Compass program of the Takahashi
CPAN   Tucows Info File (Tucows Inc.)
CPAO   3dize Cool Page Objects Counter File
CPC   Cartesian Products Compressed Internet Document (Cartesian Products, Inc.)
CPD   Fax Coversheet
CPD   Complaints Desk Script
CPD   Corel PrintOffice File
CPE   Fax Cover Sheet (Microsoft Corporation)
CPF   IGO 8 3D Buildings Database File (Global Services LLC)
CPF   CPF Editor Contract Preparation Form Submission File (CORDIS)
CPF   CircuitCAM Manufacturing Process Definition File (Aegis Industrial Software Corporation)
CPF   CaseMap Portable Format (LexisNexis)
CPF   ProWORX Nxt Comment Pointer And Length File (Schneider Electric)
CPF   O&O CleverCache Profile (O&O Software GmbH)
CPF   Complete PC Fax File
CPF   Canvastic Preferences (Canvastic)
CPG   3dize Cool Page File Tutorial
CPGZ   Compressed UNIX CPIO Archive
CPH   Print House Image (Corel Corporation)
CPI   Sietronics CPI XRD Document (Sietronics Pty Ltd)
CPI   Windows International Code Page (Microsoft Corporate)
CPI   Calamus Graphic (invers Software)
CPI   Cartesian Products Compressed Internet Document (Cartesian Products, Inc.)
CPI   ColorLab Processed Image
CPI   AVCHD Clip Information
CPICS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CPIO   UNIX CPIO Archive
CPJ   Commotion File
CPJ   CeQuadrant CD Project
CPK   Sega FILM/CPK File Format (Sega of America, Inc.)
CPL   Windows Control Panel Extension (Microsoft Corporation)
CPL   Compel Show Ver 1 Presentation (Click2learn, Inc.)
CPL   Corel Color Palette (Corel)
CPL   TrialDirector Concordance File (inData Corporation)
CPM   InterComm Project Manager File
CPM   Cisco Secure Policy Manager File
CPM   ConceptHDL Project File
CPM   CP/M Executable
CPM   Turbo Pascal DOS File (Borland Software Corporation)
CPN   Rise of Nations Campaign File (Microsoft Corporation)
CPN   Age of Empires I and II Campaign File (Microsoft Corporation)
CPN   CPN Tools CPN Model File (CPN Group at the University of Aarhus)
CPO   Corel Print House File
CPP   C++ Builder 6 (Borland Software Corporation)
CPP   Visual C++ Source Code File (Microsoft Corporation)
CPP   CA-Cricket Presents Presentation
CPP   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CPP   Xcode Core C Program (Apple Inc.)
CPP   Maya OpenGL 3D Scene (Alias Systems, a division of Silicon Graphics Limited)
CPQ   Exam Essentials Exam File (Cyber Pass Inc.)
CPR   Patrician II
CPR   Corel Presents Presentation
CPR   INMOS Transputer Development System Occam Program Code Fold
CPR   Cubase Project File (Steinberg)
CPR   CPC Plus Cartridge Image
CPR   Knowledge Access Graphics
CPR   PV-WAVE Compiled Procedure File
CPR   ConTEXT Project File (Eden Kirin)
CPR   Port Royale
CPS   Classroom Performance System File
CPS   Photo House Image (Corel Corporation)
CPS   QEMM Backup of Startup Files
CPS   Colored PostScript File
CPS   Anti-Virus Checksum
CPS   Central Point PC Tools Backup
CPT   CA Cricket Presents Template
CPT   After Shot (Corel Corporation)
CPT   Compact Pro Archive (Cyclos)
CPT   dBASE Encrypted Memo
CPT   Corel Photo-Paint Image (Corel)
CPT   CCRYPT Encrypted File
CPT   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CPT6   Corel Photo-Paint Image
CPTHEME   cPanel Theme Package (cPanel, Inc.)
CPU   Sysoft Sandra File
CPX   Rise of Nations Campaign File (Microsoft Corporation)
CPX   Age of Empires I and II Campaign File (Microsoft Corporation)
CPX   Code Page Translation File (Microsoft Corporation)
CPX   Control Panel Applet
CPX   Corel Presentation Exchange Compressed Drawing
CPX   CryptaPix Encrypted Image
CPY   Cobol Include
CPY   Flexus COBOL Definitions
CPY   Copy Books Data File
CPY   Atari Ramdrive CPY Commands
CPY   eCopy Scanned Document (eCopy, Inc.)
CPY   RM/COBOL Development System Include File (Liant)
CPZ   COMPOZ Music Text
CPZ   LoseThos C+ Source File (Terry A. Davis)
CPZ   CP Shrink Archive (Symantec Corporation)
CQ   CP/M SYSGEN Replacement
CQL   XDCC Catcher Saved Queue List (SiHiDa and balduz (Developers))
CQQ   Cool Quiz
CQS   CADfix Quality Standard (ITI TranscenData)
CQZ   Cool Quiz
CR   CRiSP Source Code
CR   Iris Printer CT Format Bitmap
CR   Crack File
CR$   BASIC VB Kartei File
CR2   Curious Labs Poser Character File
CR2   Canon Digital Camera Raw Image Format (Canon, Inc.)
CR4   STABCAL (stability calculation for aqueous systems) File
CR5   Tripod Data Systmes Survey Pro Coordinate File
CR7   STABCAL (stability calculation for aqueous systems) File
CRA   Advanced Crack File (usually text)
CRA   Personal Craft Factory File
CRACK   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CRACKING   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CRACKPOTY   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CRACKZBYMAB   YaHoE File
CRAM   Compressed ROM File System File
CRASH   OS X Crash Reporter Crash Report (Apple Inc.)
CRASH2   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CRATE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CRAW   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CRAZE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CRAZY   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CRB   BigOven Recipe Database (Lakefront Software, Inc.)
CRC   Total Commander CRC File (Christian Ghisler, C. Ghisler & Co.)
CRC   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CRC   Pro/ENGINEER Temporary File (PTC)
CRC   JPEG Sheriff CRC Info File (engineering bureau Office Automation)
CRC16   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CRD   Windows Cardfile
CRD   ColdRED Script File
CRD   Guitar Chord File
CRD   Spanish Whiz Card Game Sound File (GB Blanchard)
CRDEL   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CRDOWNLOAD   Google Chrome Google Chrome (Google)
CRE   LiveUpdate Crescendo Catapult File
CRE   Infinity Game Engine Monster Description (BioWare Corp.)
CREATOR   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CREDITS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CREG   CrazayReg Database (Crazy-Team)
CRF   CHARTrunner Chart Definition (PQ Systems)
CRF   Thief: The Dark Project Archive
CRF   MASM Cross-Reference File
CRF   Database Cross-Reference File
CRF   Programming Cross-reference
CRF   Sierra Print Artist Craft
CRF   System Shock 2 Archive
CRF   Thief 2: The Metal Age Archive
CRF   OM2Cipher Recipient File
CRF   Zortech C++ Cross-Reference File
CRF   Calcomp Raster Bitmap
CRG   Calamus Graphic (invers Software)
CRH   EBwin Estudio Basico de Seguridad y Salud Health and Safety Project Information (Procedimientos-Uno, S.L.)
CRH   Golf Image File (Microsoft Corporation)
CRH   Links Games Course File
CRK   Crack File
CRL   Certificate Revocation List
CRLD   Clicker Crick Resource Library Data File (Crick Software Ltd.)
CRM   Capital Research Vendor Bid System
CRM   Netmino File
CRM   CHARTrunner Multi-Chart Definition (PQ Systems)
CRO   Webalizer.01 Lang File
CRONTAB   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CROPS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CROSS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CROWN   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CRP   MSI SecureDoc Encrypted File (Micro-Star Int’l Co.,Ltd.)
CRP   Corel Presents Run-Time Presentation
CRP   dBASE Encrypted Database
CRP   Visual dBASE Custom Report
CRS   StepMania Course (StepMania Development Team)
CRS   Gold Game Course File
CRS   WordPerfect 5.1 for Windows File Conversion Resource (Corel Corporation)
CRS   Links Games Course File
CRS   Dance With Intensity
CRT   UNIX Crontab File
CRT   Oracle Terminal Settings Info
CRT   C64 Cartridge Image
CRT   Soft Concert Karaoke File
CRT   GlobalSign Certificate File
CRT   X.509v3 Security Certificate
CRU   CRUSH Compressed Archive
CRUNCH   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CRUNCHER   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CRV   Corel Graphics Ver. 10 Custom Gradients File (Corel)
CRV   Daqarta Extended Audio Data (Interstellar Research)
CRW   Canon Digital Camera Raw Image Format (Canon, Inc.)
CRW   Crossword Genius
CRW   Cadrail Train Terrain Layout (Sandia Software)
CRW   CHARTrunner Workspace Definition (PQ Systems)
CRX   Google Chrome Plugin/Extension File (Google)
CRX   Links Games Course File
CRY   CryEngine Sandbox Editor 2 Level Information File (CRYTEK)
CRY   Cypherix/Cryptainer Encrypted Volume File Format (Cypherix)
CRY   Crypto Chat II Encrypted Notebook-content
CRYPTOMITE   CryptoMite Encrypted Archive (BAxBEx Software)
CRYPTRA   Cryptra.exe Encrypted file (BMB Software)
CRYPTX   Cryptx Encrypted File ((CSI) Centro Studi Informatica di Danilo Priore)
CRYSISJMSF   Crysis Video Game (CRYTEK)
CRYSTALHAMMERREMIX   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CRZ   Links Games Course File
CRZ   FScruiser Cruise Record (USDA Forest Service)
CS   Visual C#.NET Source Code (Microsoft Corporation)
CS   Tribes 2 Scripting File (Sierra)
CS   Caditor Document (Caglow)
CS   CLEO 3 Custom Script (Seemann)
CS   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CS   ClearSilver (ClearSilver)
CS   Fractal Lab Data/Parameter File (Mystic Fractal)
CS   Torque Game Engine Script (GarageGames)
CS-CNF   Currency Server Software Configuration (Cloanto Corporation)
CS1   CaptureShop 1-Shot Image (Sinar)
CS3   Casio WK-1800 Keyboard Output File (Casio Computer Co., Ltd.)
CS4   CaptureShop 4-Shot Image (Sinar)
CSA   Ultimate Ride Roller Coaster
CSA   InterComm ASCII Sheet File
CSA   Comma Deliminated Text
CSB   CircuitSoft Viewer
CSB   Pci Ncr3030 Ncrflash File
CSB   Corel Photo-Paint Script (Corel)
CSC   Corel Script (Corel)
CSC   Wizard
CSC   CrystalControl LCD Control Software Screen (Crystalfontz)
CSD   Chemsoft MSDS Database File
CSD   Bitstream Fontware
CSD   Embroidery Design File
CSD   CHI-LLC Storage Designer Design (Computer Human Interaction, LLC)
CSD   Canon Camera Configuration File (Canon, Inc.)
CSD   Csound Unified File Format for Orchestras and Scores (Dr. Richard Boulanger)
CSD   EasyLink Measurement Database (Damalini AB)
CSE   Cardinal Studio Template File
CSE   GPS Pathfinder Office Coordinate System (Trinble Navigation Limited)
CSF   Brava Reader Content Sealed Format (Informative Graphics Corp)
CSF   Acrobat Color Setting (Adobe Systems Incorporated)
CSF   Photoshop Color Settings (Adobe Systems Incorporated)
CSF   [Unknown]
CSF   GeoMedia Coordinate System File
CSF   Van Dyke’s CRT/SecureCRT Script File
CSF   Uefa Champions League Logis Cutscene File
CSFDB   Open CASCADE 3D Model File (Open CASCADE Company)
CSG   Statistica Graph File
CSH   Cubase Offline Processing Information (Steinberg Media Technologies GmbH.)
CSH   Photoshop Custom Shape (Adobe Systems Incorporated)
CSH   UNIX csh Shell Script
CSH   csh Script
CSH   Hamilton Labs C Shell Script File
CSH   CARA-Script-Interpreter-Engine Script
CSHRC   UNIX C Shell Environment File
CSI   Cyberautograph Signed Item
CSK   Claris Works
CSK   Copernic 2001 Skin (Copernic)
CSK   StoryWeaver Template (Storymind Store)
CSL   Citation Style Language
CSL   AOL Modem Script (America Online, Inc.)
CSL   TestQuest Pro Test Script (TestQuest, Inc.)
CSL   Designer Symbol Library (Corel)
CSLM   Zeiss CSLM Bitmap
CSM   C++ Symbol File (Borland Software Corporation)
CSM   Kodak DC265 Camera Script
CSM   CASL Compiled PalmPilot Program (Feras Information Technologies)
CSM   COOLSoft Model Database (Wright Williams & Kelly, Inc.)
CSM   C++ Ver. 4.5 Precompiled Header (Borland Software Corporation)
CSM   Chemical Style Markup Language
CSML   Chemical Style Markup Language
CSN   Dreamweaver MX’s Snippet
CSN   CopyMate Raw Points Cloud (GraphiTech Ltd.)
CSO   CISO Compressed ISO CD Image
CSP   AudioZip Encoded Audio
CSP   Draw Service Bureau Profiler (Corel)
CSP   Intersystems Cach� Server Page File
CSP   Crystal Enterprise Crystal Server Page
CSP   Cardinal Studio Project File
CSP   ChaoSynth Parameter File (Nyrsound)
CSP   PC Emcee On-Screen Image
CSP   CaseWare Working Papers Script Page
CSP   CASLwin Program (Feras Information Technologies)
CSPROJ   Visual Studio .NET C# Project (Microsoft Corporation)
CSQ   Foxpro Query (Microsoft Corporation)
CSR   Fast SMS Set SMS Relay Configuration (Comat AG)
CSS   Stats+ Datafile
CSS   InterComm Part Body Definition
CSS   Statistica Datasheet
CSS   Hypertext Cascading Style Sheet
CSS   Citadel SafStor User Script File
CSS1   Cascading Style Sheet See .CSS.
CST   Macromedia Director Cast File
CST   CHARTrunner Chart Style Definition (PQ Systems)
CST   Technics Sx KN 6000 Keyboard Custom Style File
CST   Medbasin Model Calibration File (National Technical University of Athens, Laboratory of Reclamation Works & Water Resources Management)
CSUP   Clan Short Roster Database (Clan Short Universe Productions)
CSV   CompuShow Adjusted EGA/VGA Palette
CSV   Boso View Express Railway and Structure File (Mackoy)
CSV   Comma-Separated Variables
CSVENX   egis Encrypted CSV File (HiTRUST Inc.)
CSW   WordPerfect Setup Info File (Corel Corporation)
CSW   Compressed Square Wave
CSX   Visual C#.NET Primary Script File (Microsoft Corporation)
CSY   EPOC Polymorphic DLL
CS_   Creativ Compressed Sb16 Sbide File
CT   Iris CT Graphic
CT   Scitex CT Handshake Continuous-Tone Bitmap
CT   CTwin Project Data (Procedimientos-Uno, S.L.)
CT   Continuout Tone TIFF Bitmap
CT   Cheat Engine Cheat Table (Dream.media)
CT0   Systems Management Server (SMS) Master Site Control File (Microsoft Corporation)
CT0   Maxagrid CTM File Being Processed
CT1   Systems Management Server (SMS) Proposed Site Control File (Microsoft Corporation)
CT1   Maxagrid CTM File Successfully Processed
CT2   CTRAN/W Graphical Layout File (Geo-Slope International)
CT2   Maxagrid CTM File Unsuccessfully Processed
CT3   CaseMap Version 3.x Case Analysis Template File (LexisNexis)
CT3   Systems Management Server (SMS) Proposed Site Control File (Microsoft Corporation)
CT3   CTRAN/W Sketch Lines and Text File (Geo-Slope International)
CT4   CaseMap Version 4.x Case Analysis Template File (LexisNexis)
CT5   CaseMap Version 5.x Case Analysis Template File (LexisNexis)
CT6   CaseMap Version 6.x Case Analysis Template File (LexisNexis)
CT7   CaseMap Version 7.x Case Analysis Template File (LexisNexis)
CTAB   CACTVS Chemical Table Format
CTB   AutoCAD Color-dependent Plot Style Table (Autodesk, Inc.)
CTB   NoteTab Clipbar
CTB   Custody Toolbox Data File (Five O’clock Software)
CTC   SeeYou Flight Data (Naviter)
CTC   PC Installer Control
CTD   Marine Data File
CTD   Click to DVD Project (Sony Corporation of America)
CTD   Simpsons Cartoon Studio Export File
CTD   Cardtable File
CTD   Cobra Track Dump
CTE   Classical Text Editor Document (Stefan Hagel, Vienna)
CTF   Calculator Text Format
CTF   TIFF Compressed File
CTF   Symphony Character Code Translation (IBM)
CTF   PhotoSuite Album File (Sonic Solutions)
CTF   HP-95LX Character Translation File for Datacomm
CTF   CoffeeCup HTML Editor Table File (CoffeeCup Software, Inc.)
CTF   BrightStor ARCserve Backup Backup File (Computer Associates International, Inc.)
CTF   WhereIsIt Catalog
CTF   Casio Text File (Casio Computer Co., Ltd.)
CTF   AVG Update Control File (AVG Technologies)
CTFSYS   OS X Mach Kernel System File (Apple Inc.)
CTG   Powershot Pro 70 Info File (Canon, Inc.)
CTG   Cartridge Definition File
CTG   BMC Software Patrol File
CTG   ChessBase Opening Book
CTI   Collectorz.com Template Info File (Bitz & Pixelz)
CTK   mSuite License File (CommonTime Limited)
CTL   EditPlus Cliptext File (ES-Computing)
CTL   Visual Basic User-defined Control (Microsoft Corporation)
CTL   Setup Information
CTL   User Control
CTL   PDP-10 Batch Control File
CTL   Notes 5 Thesaurus (IBM)
CTL   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CTM   Maxagrid CTM File
CTM   Java Charge Transaction Matrix File
CTM   SDR99 Speech Recognition Task Time Marked Conversation Input
CTM   Crazy Talk Face Model File (Reallusion Inc.)
CTM   CGMetafile
CTM   FreeBSD Content Management File
CTM   Content Delivery Service
CTM   Crazytalk Talking Animation File
CTM   OpenCTM Compressed Triangle Mesh File (Marcus Geelnard)
CTN   CADTERNS Sloper File (CADTERNS Custom Clothing Inc.)
CTP   American Greetings CreataCard (Broderbund)
CTP   BestAddress HTML Editor Combined Template File (Multimedia Australia Pty. Ltd.)
CTP   ChemDraw Template
CTP   CakePHP View template (CakePHP)
CTR   ERGO Receiver Configuration File (Creative Express Corporation)
CTR   CATALYST Text Parsing Rules File (Alchemy Software Development Ltd.)
CTR   Corel40 Trace File
CTR   The Cookie Counter! Hit Count File (CLIQ Services Coop)
CTR   CTRAN/W DEFINE Data File (Geo-Slope International)
CTR   Counter File
CTRL   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CTS   ABC Programming Language Permanent Location Contents
CTS   Crazy Talk Audio File (Reallusion Inc.)
CTS   ClipTrakker Clipboard Collection (SoftwareOnline)
CTT   MSN Messenger Saved Contact List (MSN)
CTT   CAIL Suite Terminal Emulation Data (CAIL Systems Inc.)
CTT   LabVIEW File
CTV   Citavi Project (Academic Software Zurich GmbH)
CTW   Context Tree Weighting Compressed File (Eindhoven University of Technology)
CTX   Gasteiger Group CTX Chemical File
CTX   Chinese Character Input File
CTX   Compressed Text
CTX   GE Industrial Systems CIMPLICITY Text Version HMI Screen
CTX   Alphacam Compiled Text (Planit)
CTX   Online Course Text (Microsoft Corporation)
CTX   Pretty Good Privacy (PGP) Ciphertext File (PGP Corporation)
CTX   Windows Terminal Server INI Backup File (Microsoft Corporation)
CTX   Visual Basic User Control Binary File
CTX   CTRAN/W DEFINE Compressed Data File (Geo-Slope International)
CTX   Nokia PC Suite Backup Contact File (Nokia)
CTY   Railroad Tycoon 3 Cargo (PopTop Software Inc.)
CTY   SimCity City File (Electronic Arts, Inc.)
CTY   Fog Creek CityDesk Template
CTZ   Custody Toolbox Compressed Backup File (Five O’clock Software)
CU1   Photoline4 Curves Curve File
CU3   Photoline4 Curves Clut File
CUB   Cubloc Studio PLC Information File (Comfile Technology Inc.)
CUB   PowerPlay File (Cognos Incorporated)
CUB   SeeYou Airspace (Naviter)
CUB   MDL Molfile Gaussian Cube (Wavefunction) Format (MDL Information Systems, Inc.)
CUB   OLAP Cube File (Microsoft Corporation)
CUBE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CUBE   Gaussian Cube File
CUBE   Cubicomp PictureMaker Bitmap
CUBI   Cubicomp PictureMaker Bitmap
CUC   SeeYou Contest File (Naviter)
CUE   BPM Studio Cue Points (ALCATech)
CUE   Cue Cards Data (Microsoft Corporation)
CUE   CDRWin and Others Description File for a CD-Image
CUE   CUEcards 2000 Database (Marcus Humann)
CUF   Turbo C Utilities Form Definition (Borland Software Corporation)
CUL   IconForge/ImageForge Cursor Library
CUL   Cubloc Studio PLC Information File (Comfile Technology Inc.)
CUP   SeeYou Waypoint (Naviter)
CUP   OzWin CompuServe E-mail/Forum Access Catalog Library Update
CUP   Roland Garros Tennis Terrain File
CUR   Windows Cursor (Microsoft Corporation)
CUREXSCHEME   CursorXP Theme (Stardock Corporation, Inc.)
CURL   URL Links Curl
CURSOR   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CURSOR   Sun Icon/Cursor
CURV   Genetica Mathematical Curve (Spiral Graphics Inc.)
CURVE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CURXPTHEME   CursorXP Theme (Stardock Corporation, Inc.)
CUS   ConciseURI Syntax (Clear Methods, Inc.)
CUS   Medlin Accounting Customer Data (Medlin Accounting)
CUS   Payroll Mate 2008 Customer Data (RealTaxTools.com)
CUS   AutoCAD Custom Dictionary (Autodesk, Inc.)
CUSTOM   Personal Paint Custom Language User Interface File (Amiga)
CUT   INMOS Transputer Development System Occam Utility Package
CUT   Utilitaires
CUT   CLAN Disambiguation Rules (Child Language Data Exchange System)
CUT   Dr. Halo Bitmap Graphic
CUT   DataWave Physiological Data File
CUT   BPM Studio Cue Points and Marker Information (ALCATech)
CUTLIST   Asfbin Assistant Cut Data
CUZ   CropWalker
CU_   Winhelp Compressed File
CV   CodeView Information (Microsoft Corporation)
CV   Versions Archive (Corel)
CV3   Civilization III Game High Score (Firaxis Games, Inc.)
CV4   CodeView Colors (Microsoft Corporation)
CV5   CCS-lib.2 JPEG Stream File
CV5   Canvas Version 5
CVA   Compaq Diagnostics (Hewlett-Packard Development Company, L.P.)
CVB   Borland BDE File (Borland Software Corporation)
CVD   Clam AntiVirus Database (Clam AntiVirus Team)
CVD   Yamaha Custom Drums (Yamaha Corporation of America)
CVD   Calamus Vector Graphic (invers Software)
CVD   ClamWin AntiVirus Database (Clam AntiVirus Team)
CVD   CVTracker Dictionary File (Netmap Software Inc.)
CVF   Train Simulator Cab View File (Microsoft Corporation)
CVF   SuperStor Compressed Volume
CVF   Jet-VoiceMail Audio Data (COWON America, Inc.)
CVG   Calamus Vector Graphic (invers Software)
CVG   CVTracker Personal Goal File (Netmap Software Inc.)
CVH   CVTracker Proprietary Help File (Netmap Software Inc.)
CVH   Sound File
CVIP   CVIPlab File
CVJ   Cabinet Vision Solid Job Document (Planit Solutions, Inc.)
CVL   VLBI and Tied Array Cover Letter Tasking Document
CVL   Coastal Vector List Text Format
CVN   Yamaha Custom Voices (Yamaha Corporation of America)
CVP   WinFax Cover Page (Symantec Corporation)
CVP   Portrait
CVP   Kodak File
CVQ   Coastal Vector List Compressed Format
CVR   Bitware Fax File
CVR   ElectraSoft Fax Cover Sheet
CVR   WinFax Cover Page (Symantec Corporation)
CVS   Canvas Drawing File
CVS   Outlook Express File
CVS   Sound File
CVSAUTO   Call Management System (CMS) Automatic Script (Avaya Inc.)
CVSIGNORE   Snort File
CVT   dBASE Converted Database Backup
CVT   Follett Conversion Tool
CVT   CVTracker Position and Company Template File (Netmap Software Inc.)
CVT   Convert Data File (Joshua F. Madison)
CVW   Giza Specifier Carera View (20-20 Technologies)
CVW   Analytics Cube Report (Actuate Corporation)
CVW   CodeView Colors (Microsoft Corporation)
CVX   Canvas Versions 6, 7, 8, 9 Graphic File (ACD Systems Ltd.)
CW   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CW   CodeWallet Pro Secure Database (Developer One, Inc.)
CW2   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CW3   Claris Works Win 3 Document
CW3   Chem Draw Molecular Structure
CW3   Crossword Construction Kit Puzzle Group
CW6   COMPRESS Windows Version Pressure Vessel Data File (Codeware Inc.)
CWA   Castelware Inventory Hardware/Software Audit File (Castelware GmbH)
CWA   See .CLC
CWB   WebNote Document
CWC   CADfix Wizard Configuration File (ITI TranscenData)
CWD   StarDraft CWAD File
CWD   Cardwar Card Deck (Stefan Sarbok)
CWDOC   CopyWrite Project Document (Bartas Technologies)
CWE   Crossword Express (AUS-PC-SOFT)
CWEB   C Web
CWF   CodeWatch for Windows Workspace File (Liant)
CWG   Castle of the Winds Saved Game
CWK   ClarisWorks Data File (FileMaker, Inc.)
CWK   GCPrevue Work File (Graphicode)
CWK   CattleMax Data File (Cattlesoft, Inc.)
CWL   ClarisWorks Library
CWP   Cakewalk SONAR Audio Project (Cakewalk)
CWPB   CopyWrite Project Binder (Bartas Technologies)
CWR   Crystal Reports Report (Crystal Decisions)
CWR   Wrapcandy Candy Wrapper (Wrapcandy.com)
CWS   combustion Workspace (Discreet)
CWS   Claris Works Template
CWW   Crossword Weaver File
CWZ   CropWalker File
CW_   Corel Graphics Ver. 10 Workspace (Corel)
CX   CodeMapper Script
CX3   click.EXE 3.0 Script File (ASXperts Inc.)
CXB   Custody X Change Data File (Custody X Change, Inc.)
CXB   ComicGuru (Fay Solutions)
CXC   Custody X Change Data File (Custody X Change, Inc.)
CXD   SimplePCI Combined Graphics and Data (Compix Inc., Imaging Systems)
CXE   Common XML Envelope
CXF   Chemical Abstracts Exchange Format
CXF   Picasa Collage File
CXH   Custody X Change Data File (Custody X Change, Inc.)
CXI   COMPAxiON Compressed File (Xitech (Europe))
CXL   ConsoXL Project File (jepib)
CXL   Business Integrator Extract Schema (Pervasive Software Inc.)
CXM   QuadColor Color Correction Master
CXM   XYZ-Company.com Proprietary File
CXO   CXInsight Export File (CodeMatrix Ltd.)
CXP   Core Media Player XML-based Playlist File (CoreCodec, Inc.)
CXP   XYZ-Company.com Proprietary File
CXP   CX-Programmer PLC Program File (Binary) (Omron Electronics LLC)
CXS   ConciseXML Format File (Clear Methods, Inc.)
CXT   CX-Programmer PLC Program File (Text) (Omron Electronics LLC)
CXT   Macromedia Director Protected Cast File
CXT   Crocodile Technology Circuit (Crocodile Clips Ltd)
CXT   Vegas Jackpot Gold Game Data File
CXV   Custody X Change Data File (Custody X Change, Inc.)
CXV   CryptoEx Volume File (Navastream)
CXX   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CXX   Zortech C++ Program
CXX   Visual C++ Source Code File (Microsoft Corporation)
CX_   C Poet Compressed Disk1 File
CY   CCS-lib.2 JPEG-v4 File
CYA   Cyan Color Separation (Adobe Systems Incorporated)
CYC   CYCAS Design Project (Verlag Frese)
CYCLE   Unknown Apple II File (found on Golden Orchard Apple II CD Rom)
CYG   Pollux Data (CyGem, ltd.)
CYI   Clustify Input File (Hot Neuron LLC.)
CYL   Ribbons Molecular Cylinder
CYM   Callus Game Sound File (Bloodlust Software)
CYN   Cynex Root55 Program Extension
CYO   Clustify Output File Containing Cluster ID (Hot Neuron LLC.)
CYP   Crocodile Physics Simulation File (Crocodile Clips Ltd.)
CYP   Cypherus Encrypted Archive
CYP   FCB Cypher Knot Diagram (International Guild of Knot Tyers)
CYS   Clustify Clustering Summary (Hot Neuron LLC.)
CYT   Crocodile Technology Simulation (Crocodile Clips Ltd.)
CZD   The Crash Zone Drawing (The CAD Zone)
CZE   NHL Ice Hockey 2002 Required File
CZE   Personal Paint Czech Language User Interface File (Amiga)
CZIP   ZipGenius Compressed Archive (M.Dev Software)
CZP   Cloze Pro Archive (Crick Software Ltd.)
CZS   WinEcran screen link (Bruno DENIS)
C_   Winhelp Compressed File
C_M   Eru/erd File
C__   C++ Source; C__ is C++ in Win32
C~G   Windows 3.x System File

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