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Data Formats and File Extensions: C

Find data formats and their file extensions starting with the letter C.

With literally thousands of data file formats employed by Windows and Window-based apps, keeping track of all the file extensions employed by your software applications and programs can be quite a challenge. Fortunately, Webopedia's Complete List of Data File Formats and File Extensions makes it quick and easy to sift through thousands of file extensions and data file formats to find exactly what you need. You can peruse the full list or search for data formats and file extensions based on the letter they start with from the table below.

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  Data File Formats that Begin with the Letter 'C'


.c C source code file
Compressed unix file archive created by COMPACT
.c++ C++ source code file
.c-- Source code (Sphinx C--)
.c00 Print file (Ventura Publisher)
WinAce Split Archive file
.c01 Genesis 2000
.c2d WinOnCD CD Image
.c4d MAXON Cinema 4D File (Graphics)
.c60 Midtronics Battery Management Software
.c86 C source code file (Computer Innovation C86)
.ca Initial cache data for root domain servers (Telnet)
.cab Cabinet File (Microsoft installation archive)
.cache Cache file (typically Web cache)
.cad Softdesk Drafix CAD File
.cac dBASE IV executable when caching on/off (see cachedb.bat)
.cad Document (Drafix Windows CAD)
.cag MS Clip Gallery Catalog file
.cal Calendar file (Windows 3.x)
Calendar Maker Pro
.calb Coolect Album file (Coolect Album Player)
Spreatsheet (SuperCalc)
.cam Casio Camera Graphic
.can Fax (Navigator Fax)
.cap Caption (Ventura Publisher)
Session capture file (Telix)
.car AtHome Assistant file
Carrara Environment
NeoBook Cartoon
.cas Comma-delimited ASCII File
.cat Catalog (dBASE IV)
.cb Clean Boot File (Microsoft)
Brief Macro Source Code
.cbc Fuzzy logic system (CubiCalc)
.cbf Calendar Builder file
.cbl Cobol source code file
.cbm Compiled bitmap graphics (XLib)
.cbp CentralBuilder Project
.cbr ComicBook Reader File archive (CDisplay image viewer)
.cbt Computer Based Training (many)
.cbz ComicBook Reader File archive (CDisplay image viewer)
.cc C++ source code file
.cca CC:Mail archive file
.ccb Visual Basic Animated Button Configuration
.ccc Bitmap graphics (native format) (Curtain Call)
.ccd CloneCD Related file
Vector CAD Program file
.cce Calendar Creator 2 Event file
.ccf Communications configuration file (Symphony)
.cch Chart (CorelChart)
.ccl Communication Command Language file (Intalk)
.cco Btx Graphics file (XBTX)
.cct Macromedia Director Shockwave file
.ccx Corel PrintHouse file
.cda CD Audio Track
.cdb Card database (CardScan)
Main database (TCU Turbo C Utilities)
.cdd ConceptDraw Document file
.cde Honeywell Hybrid Control Designer
.cdf Component Definition file
Graphics (netcdf)
.cdg Compact Disc Plus Graphics file
.cdi Phillips Compact Disk Interactive format
DiscJuggler Image file
.cdk Document (Atari Calamus)
.cdl CaseWare Working Papers Document Link
SignLab Vector Graphic
.cdm Media Maker Disk Image file
Visual dBASE Custom Data Module
.cdp Visual Objects Developer file
CD/Spectrum Pro
.cdr Vector graphics (CorelDRAW native format)
.cdt Data (CorelDraw 4.0)
.cdx CorelDraw Compressed Image file
Compound index (FoxPro)
.ce Main.ce (The FarSide Computer Calendar)
.ceb Apabi eBook file
.ceg Bitmap graphics (Tempra Show - Edsun Continuous Edge Graphics)
.cel Graphics (Autodesk Animator - Lumena)
.cf Sendmail Configuration file
Configuration file (imake)
.cfb Comptons multimedia file
.cfc Macromedia Coldfusion component extension
.cfg Configuration
.cfl Chart (CorelFLOW)
.cfm ColdFusion Markup Language (Allaire)
.cfn Font data (Atari Calamus)
.cfo C Form Object internal format object file (TCU Turbo C Utilities)
.cfp Quicken Cash Flow Projection file
Fax (The Complete Fax Portable)
.cfr Crossfire Replay file
.cga CGA display font (Ventura Publisher)
.cgd Cricket Graph Data file
.cge CCD Astrocamera
.cgi Common Gateway Interface script
.cgm Computer Graphics Metafile vector graphics (A&L - HG - many)
.ch Header file (Clipper 5)
.ch3 Chart (Harvard Graphics 3.0)
.ch4 Presentation (Charisma 4.0)
.chd Font descriptor (FontChameleon)
.chi Document (ChiWriter)
.chk Recovered data (ChkDsk)
Temporary file (WordPerfect for Win)
.chl Configuration History Log
.chm Compiled HTML
.chn Data (Ethnograph 3)
.cho ChordPro file
.chp Chapter file (Ventura Publisher)
.chr Character set (Turbo C - Turbo Pascal)
.cht Chart (Harvard Graphics 2.0 - SoftCraft Presenter)
Interface file for ChartMaster (dBASE)
.chw Compiled Help Index file
.cid AnalogX Caller ID file
.cif Caltech Intermediate Format graphics
Chapter information (Ventura Publisher)
.ciff Canon CIFF
.cil Clip Gallery Download Package
.cit Intergraph Raster File Reference
.cix Database index (TCU Turbo C Utilities)
.ckb Keyboard mapping (Borland C++ 4.5)
.cl Common LISP source code file
.cl3 Easy CD Creator Layout file
.cl4 Easy CD Creator Layout file
.cl5 Easy CD Creator Layout file
.class Java class file
.clb ICQ Contact List
MS Office XP Developer Code Librarian
cdrLabel Compact Disc Label
.clg Windows Catalog file
.cli Client Management System Customer file
.clm COLIMO file
.clp Clip art graphics (Quattro Pro)
Clipboard file (Windows 3.x)
Compiler script file (clip list) (Clipper 5)
.clpi Blue-ray Disc Clip Information file
.clr Color binary screen image (1st Reader)
Color definitions (Photostyler)
.cls C++ class definition file
.cm Data file (CraftMan)
.cmd Batch file (OS/2)
Command (dBASE - Waffle)
External command menu (1st Reader)
.cmf FM-music file (Creative Music File)
.cmg CMG file
.cmk Card (Card Shop Plus)
.cml COMAL programming language
.cmm Cmm script (batch) file (CEnvi)
.cmo Virtools Composition file
.cmp Header file for PostScript printer files (CorelDRAW)
User dictionary (MS Word for DOS)
Bitmap graphics (Lead CMP compression)
.cmq Culturemetrics file
.cmt Culturemetrics file
.cms TrialDirector media storage
.cmv Animation (CorelMove CorelDraw 4.0)
.cmx Corel PhotoPaint Image
Corel Presentation Exchange Image
The Sims (Maxis) 3D Body Mesh Data
Apple Viewer file
.cnc CNC general program data
.cnd ControlDraw file
Embroidery Design file
.cnf Configuration (program - printer setup)
.cnt Helpfile contents
.cnv Data conversion support file (Word for Windows)
Temporary file (WordPerfect for Win)
.cob Cobol source code file
.cod Datafile (Forecast Plus - MS Multiplan - StatPac Gold)
Program compiled code (FORTRAN)
Template source file (dBASE Application Generator)
Videotext file
.col Color palette (Autodesk Animator - many)
Spreadsheet (MS Multiplan)
.com Command (memory image of executable program) (DOS)
.con Configuration file (Simdir)
.conf Configuration file
.config Configuration file
.cor Protein Structure file
Web GPS Correction Server Export file
WMOVIEC Input file
.cpd Script (Complaints Desk)
.cpe MS Fax Cover Sheet
.cpf Fax (The Complete Fax)
Clever Cache Profile file
.cph Corel Print House image
.cpi Code Page Information file (DOS)
AVCHD Clip Information
Colorlab Processed Image bitmap graphics
.cpl Control panel file (Windows 3.x)
Presentation (Compel)
.cpo Corel Print House file
.cpp C++ source code file
Presentation (CA-Cricket Presents)
.cpr Cubase Project file
.cps Backup of startup files by Central Point PC Tools autoexec.cps
coloured postscript files
.cpt Compressed Mac file archive created by COMPACT PRO (ext-pc.zip)
Corel Photo-Paint Image
Encrypted memo file (dBASE)
Template (CA-Cricket Presents)
.cpx Control Panel Applet
Corel Presentation Exchange Compressed Drawing
.cpy Copy Books Data file
.cpz Music text file (COMPOZ)
.cr2 Canon Raw Image file
.crc Total Commander CRC file
.crd Cardfile (Windows 3.x - YourWay)
ColdRED Script file
Guitar Chord file
.crf Cross-reference (MS MASM - Zortech C++)
.crh Links Games Course file
MS Golf Image file
.crp Encrypted database (dBASE IV)
.crs File Conversion Resource (WordPerfect 5.1)
.crt Terminal settings information (Oracle)
Security certificate (Windows Sharepoint)
.crtr Multi-Ad Creator 7 document
.crtx Microsoft Chart Template file
.cru Compressed file archive created by CRUSH
.crw Canon RAW Image file
.crx Chrome Extension file
Links Games Course file
.crz Links Games Course file
.cs Visual C# Source file
.csa Comma Deliminated Text
Ultimate Ride Roller Coaster
.csf Adobe Colour Settings file
Van Dyke's CRT/SecureCRT Script file
.csg Graph (Statistica/w)
.csh Hamilton Labs C Shell Script file
.csk Claris Works
.csm Precompiled headers (Borland C++ 4.5)
.cso Compressed ISO Image file
.csp PC Emcee Screen Image file (Computer Support Corporation)
.css Cascading Sheet Style file
Datafile (CSS - Stats+)
Datasheet (Statistica/w)
.cst Macromedia Director Cast file
Panasonic music file (keyboard)
.csv Comma Separated Values text file format (ASCII)
Adjusted EGA/VGA palette (CompuShow)
.ct Continous Tone file
.ctc Control file (PC Installer)
.ctd Cobra Track Dump
Cardtable file
Marine Data file
Simpsons Cartoon Studio Export file
.ctf Character code translation file (Symphony)
.ctg Canon Catalog file
Cartridge Definition file
ChessBase Opening Book
Canon Powershot Pro 70 Info file
.ctl Microsoft Visual Basic Control file
Control file (dBASE IV - Aldus Setup)
Setup information
.ctn CADTERNS file
.ctt Messenger contacts file
Labview file
.ctu CZTU, a gamma-ray analysis program. Need the CTZU.exe file to work
.ctx Course TeXt file (Microsoft online guides)
Ciphertext file (Pretty Good Privacy RSA System)
.cty SimCity City file
.cue MS Cue Cards data
.cuf C Utilities Form definition (TCU Turbo C Utilities)
.cul Windows cursor library (IconForge, ImageForge, ImageForge PRO)
.cur Cursor image file (Windows 3.x)
.cut Bitmap graphics (Dr. Halo)
Dr Halo CUT files
.cv4 Color file (CodeView)
.cv5 Canvas version 5
.cva ACD Canvas Sequence Set file
Compaq Diagnostics
.cvb Borland BDE File
.cvd Bitdefender
.cvp Cover page (WinFax)
.cvr WinFax Cover Sheet
ElectraSoft Fax Cover Sheet
.cvs Graphics (Canvas)
.cvt Backup file for CONVERTed database file (dBASE IV)
.cvw Color file (CodeView)
.cwk Claris Works data
.cwz CropWalker file
.cxf Google Picasa Collage file
.cxp Core Media Player XML-based Playlist File
.cxt Macromedia Director Protected Cast file
.cxx C++ source code file (Zortech C++)

Recommended Reading: An Introduction to Data File Formats and Their File Extensions

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