List of Data File Formats Starting 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++) |
