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| Ext. | Description |
|---|---|
| C | C source |
| C | Compressed unix file archive (compact) |
| C-- | C-- language source code file (Sphinx C--) |
| C++ | C++ language source code file |
| C00 | Ventura Publisher print file |
| C01 | Typhoon wave files |
| C4 | Bitmap image (1bit) (JEDMICS CCITT4 format) |
| C64 | Commodore 64 bitmap image |
| C86 | C language source code file (Computer Innovation C86) |
| CA | Initial cache data for root domain servers (Telnet) |
| CA0 | Borland Installer packed and splitted file |
| CA7 | Beta 44 job file |
| CAB | Archive format (Microsoft CABinet File) |
| CAC | dBASE IV executable when caching on/off |
| CAD | Drafix CAD document |
| CAL | CALS Compressed B&W bitmap image (Computer-aided Acquisition and Logistics Support) |
| CAL | SuperCalc spreadsheet |
| CAL | Windows 3.x CALendar file |
| CAL | MS Schedule+ 1.0 file |
| CAL | CyberAudioLibrary link |
| CALS | Bitmap image (Computer Aided Acquisition and Logistics Support) |
| CAM | Casio QV digital CAMera image |
| CAM | Minolta CAM file |
| CAN | Navigator Fax |
| CAP | Ventura Publisher CAPtion |
| CAP | ProComm/Telix session CAPture file |
| CAP | Compressed music file |
| CAP | Capture-File (Telix) |
| CAS | C + ASM language source (Turbo C) |
| CASE | EnCase Evidence Case File |
| CAT | dBASE/CP Backup CATalogue-file |
| CAT | IntelliCharge CATegorization file (Quicken) |
| CAT | Rational Rose logical package |
| CAT | 3D F/X object library |
| CAT | Game data file |
| CB | MS Clean Boot file |
| CBC | CubiCalc fuzzy logic system |
| CBF | Chessbase-File |
| CBI | Column BInary formatted file (IBM mainframe systems) |
| CBI | Chessbase Index |
| CBL | Cobol language source code file |
| CBM | XLib compiled bitmap image |
| CBS | MasterWord button bar configuration |
| CBT | Computer Based Training |
| CBT | TurboPascal QuickTour data file |
| CC | C++ language source code file (gcc) |
| CC | Visual dBASE custom class |
| CCA | Data (cc:Mail) |
| CCAD | ClarisCAD data |
| CCB | Visual Basic animated button configuration |
| CCC | Curtain Call bitmap image (native format) |
| CCF | Symphony communications configuration file |
| CCF | OS/2 Multimedia Viewer configuration file |
| CCH | OES Systems Photomodeler Photochip file (thumbnail) |
| CCH | CorelChart chart |
| CCI | CCITT Group 3 and Group 4 Encoding |
| CCITT | CCITT Group 3 and Group 4 Encoding |
| CCL | Intalk Communication Command Language file |
| CCM | Lotus CC:Mail mailbox |
| CCO | Btx Graphics file (XBTX) |
| CCO | Data (CyberChat) |
| CCRF | Bitmap image (Calcomp Raster File) (B&W or 1bit CMYK for printers) |
| CCT | Macromedia Director Shockwave cast |
| CD | CD description (DN) |
| CDA | CD Audio song |
| CDB | Clipboard |
| CDB | CardScan Card DataBase |
| CDB | Main database (Turbo C Utilities) |
| CDF | MS Channel Definition Format |
| CDF | Common Data Format, NSSDC scientific graphical format |
| CDF | Cyberspace Description Format, ASCII format describing VRML worlds |
| CDF | Unidata netCDF graphics |
| CDF | Comma delimited format |
| CDI | Compact Disk Interactive (Phillips CD-I IFF file) |
| CDK | Atari Calamus document |
| CDL | CADKey CAD language file |
| CDM | Visual dBASE Custom Data Module |
| CDM | Novell NetWare Disk Drivers NPA |
| CDM | Music format (compressed) |
| CDR | CorelDraw vector image |
| CDR | Raw audio-CD data |
| CDT | CorelDraw template file |
| CDX | FoxPro compound index |
| CDX | Corel Draw compressed drawing |
| cdx | Compund index (FoxPro) |
| CDX | FileAssist data file (Norton Desktop 3.0) |
| CE | Computer Eyes (Digital Vision IFF bitmap) |
| CEF | CA Clipper workbench application |
| CEG | Tempra Show/Edsun Continuous Edge Graphics bitmap image |
| CEL | AutoDesk Animator/3D Studio Cel animation (bitmap) |
| CEL | Bitmap image (15/32bit) (Lumena CEL file) (Time Arts software) |
| CEL | CIMFast Event Language file |
| CER | Security CERtificate |
| CER | Lahey Fortran compilation error messages |
| CF | Imake ConFiguration |
| CF# | Configuration file (BiModem) |
| CFB | Comptons multimedia file |
| CFB | Inmos binary configuration file |
| CFG | Configuration file |
| CFL | CorelFLOW chart |
| CFM | Corel Font Master |
| CFM | HyperText Markup Language file (WWW-page) |
| CFM | Visual dBASE customer form |
| CFM | ColdFusion template |
| CFN | Atari Calamus font data |
| CFO | C Form Object file (Turbo C Utilities) |
| CFP | Fax (The Complete Fax Portable) |
| CFR | CFR Guidance (NRC Inspection Manual) |
| CFS | Inmos configuration file |
| CFT | CFast graphics file (Disney Animation Studio) |
| CGA | Ventura Publisher CGA display font |
| CGA | CGA driver file |
| CGA | CGA graphic file |
| CGI | Common Gateway Interface script (WWW) |
| CGL | CodeGuard error log |
| CGM | Computer Graphics Metafile vector-image |
| CGM | Computer Graphics Metafile (Freelance / Vektor) |
| cgm | Computer Graphics Metafile (Harvard Graphics, Lotus) |
| CGM | Vektorgrafik im Computer-Graphics-Metafile-Format |
| CH | OS/2 configuration file |
| CH | CA Clipper header file |
| CH1 | Freelance CHart |
| CH3 | Harvard Graphics v3.0 CHart/image |
| CH4 | Charisma 4.0 presentation |
| CHA | CHAT (IRC data) |
| CHAT | CHAT (IRC data) |
| CHD | FontChameleon font descriptor |
| CHI | Chiwriter document |
| CHK | CHKdsk/ScanDisk recovered data |
| CHK | WordPerfect for Win temporary file |
| CHK | Backup file (DOS ChsDsk /F) |
| CHK | Cluster file (CHKDSK) |
| CHKLISTMS | MSAV report (Microsoft AntiVirus) |
| CHL | Configuration History Log |
| CHM | Compiled HTML file, functional comparable with .hlp |
| CHN | Ethnograph 3 data |
| CHN | Application (start with mit RUN.COM) |
| CHP | Corel Ventura Publisher Chapter |
| CHR | Borland language stroke font file |
| CHR | Borland BGI Stroked Font |
| CHT | Harvard Graphics Graphwriter II/SoftCraft Presenter chart/image |
| CHT | dBASE interface file |
| CHW | HTML Help general index, funtional comparable with .gid |
| CHZ | CHARC compressed file archive |
| CIF | Easy CD Creator CD Image File |
| CIF | Ventura Publisher chapter information |
| CIF | Caltech Intermediate Format image |
| CIF | IUCr Crystallographic Information File |
| CIL | Art Gallery clip gallery download package |
| CIM | C Text Mode Image File (The Ultimate Draw) |
| CIM | SimCity 2000 game data |
| CIN | Digital moving Picture eXchange bitmap by the Society of Motion Picture and Television Engineers |
| CIN | OS/2 INI file change control file |
| CIX | Database index (Turbo C Utilities) |
| CK1 | Game data (iD/Apogee Commander Keen 1) |
| CK2 | Game data (iD/Apogee Commander Keen 2) |
| CK3 | Game data (iD/Apogee Commander Keen 3) |
| CK4 | Game data (iD/Apogee Commander Keen 4) |
| CK5 | Game data (iD/Apogee Commander Keen 5) |
| CK6 | Game data (iD/Apogee Commander Keen 6) |
| CKB | Borland C++ 4.x keyboard mapping |
| CL | Common LISP language source code file |
| CL3 | Easy CD Creator CD layout |
| CLA | Clarion source |
| CLASS | Java bytecode (compiled class - application) |
| CLB | Super NoteTab CLipBook template |
| CLB | CorelMosaic image archiv |
| CLC | CorelMosaic image catalog |
| CLD | TerraGen cloud layer file |
| CLD | CA Clipper debugger configuration file |
| CLDLYR | TerraGen cloud layer file |
| CLG | Database of Disk Catalog |
| CLH | CorelMosaic Bildarchiv (alte Version) |
| CLL | CrickSoftware Clicker File |
| CLO | Cloe image |
| CLP | Windows Clipboard file |
| CLP | Quattro Pro/PCPaint/Pictor bitmap CLiP-art |
| CLP | CA Clipper compiler responce file |
| CLP | Quattro Pro clipart graphics file |
| CLR | 1st Reader CoLoR binary screen image |
| CLR | Photostyler CoLoR definitions |
| CLR | Boxer/2 CoLoR scheme |
| CLR | Color settings |
| CLS | Visual Basic class module |
| CLS | C++ class definition file |
| CLS | WisoGermany street map |
| CLW | MFC Class Wizard information (Ms VC++) |
| CM | Unix Puzzle bitmap image (8bit) |
| CM | CraftMan data |
| CM | BRIEF macro file |
| CMB | Xtree for Windows button bar |
| CMD | REXX batch file (OS/2) |
| CMD | dBASE command file |
| CMD | 1st Reader external command menu |
| CMD | Waffle command file |
| CMD | Norton Utilities menu file |
| CMF | Corel matafile |
| CMF | Sound Blaster synthesized FM-sound (Creative Music File) |
| CMG | Chessmaster saved game |
| CMK | Card Shop Plus card |
| CML | CML document (Chemical Markup Language) |
| CMM | CEnvi CMM script |
| CMP | JPEG bitmap image (Lead CMP compression) |
| CMP | Address document of Route 66 |
| CMP | Photofinish Calibration MaP |
| CMP | Compressed data (PKWare compression library) |
| CMP | CraftMan data |
| CMP | CorelDraw header file for PostScript printer files |
| CMP | MS Word for DOS user dictionary |
| CMP | JPEG Pixelgrafik |
| CMR | Movie |
| CMRT | CraftMan data |
| CMU | Bitmap image (Carnegie Mellon University, WMF) |
| CMUWM | Bitmap image (Carnegie Mellon University, WMF) |
| CMV | CorelMove/CorelDraw 4.0 animation |
| CMX | Corel Presentation Exchange vector image |
| CMY | Corel CMYK-color palette |
| CMYK | Raw cyan, magenta, yellow and black bytes bitmap image |
| CN2 | ClickNet network management |
| CNC | CNC general program data |
| CNF | CoNFiguration-file (program - printer setup) |
| CNM | Windows application menu options and setup file |
| CNQ | Compuworks Design shop file |
| CNT | Help Contents File |
| CNT | Rational Rose 98 contents tab file |
| CNV | Word for Windows support file used for import CoNVersion (=DLL) |
| CNV | WordPerfect for Win temporary file |
| COA | Caligari trueSpace 3D object (ASCII) |
| COB | Caligari trueSpace 3D object (binary) |
| COB | Cobol language source code file |
| COD | UUPC Code definition table |
| COD | Forecast Plus/Ms Multiplan/StatPac Gold datafile |
| COD | Boxer/2 printer CODe definition file |
| COD | FORTRAN program compiled CODe |
| COD | Source code in assembler with original C code as comments (Ms C) |
| COD | Template source file (dBASE Application Generator) |
| COD | Videotext file |
| COL | COLor palette (Autodesk Animator - many) |
| COL | MS Multiplan spreadsheet |
| COM | DOS or CP/M executable (COMmand), mostly smaller than 64 Kb |
| CON | Simdir CONfiguration file |
| CON | ADW Knowledge Ware consolidation file |
| CON | Duke Nukem 3D configuration file |
| CONF | Unix Configuration information |
| COO | COOkie file |
| CORE | Bitmap image (Core Software Tech CORE IDC file) |
| COV | VIP-Fax cover file |
| CP8 | CP8 256 Gray Scale image |
| CPB | CommPlus phonebook file |
| CPC | Compressed image (Cartesian Perceptual Compression) |
| CPD | Corel PrintOffice drawing |
| CPD | Fax Cover document |
| CPD | Complaints Desk script |
| CPE | Fax cover page |
| CPF | Fax (The Complete Fax) |
| CPI | Bitmap image (Colorlab Processed Image) |
| CPI | Code Page Information file (DOS) |
| CPJ | CeQuadrat CD ProJect file |
| CPL | Windows Control Panel Module |
| CPL | Compel presentation |
| CPO | Corel Print House data |
| CPP | C++/TurboC source |
| CPP | CA-Cricket Presents presentation |
| CPR | Corel Presents presentation |
| CPS | QEMM backup of startup files |
| CPS | Color PostScript |
| CPS | Checksum file (chklist.cps) |
| CPT | Corel PhotoPaint bitmap image |
| CPT | Compact Pro archive format (Macintosh) extpc102.exe |
| CPT | dBASE encrypted memo file |
| CPT | CA-Cricket Presents Template |
| CPX | Compressed drawing (Corel Presentation Exchange) |
| CPZ | COMPOZ music text file |
| CRA | Advanced CRAck file (usually text) |
| CRF | Bitmap image (Calcomp Raster File) (B&W or 1bit CMYK for printers) |
| CRF | MASM/Zortech C++ Cross-reference |
| CRG | Raster-Grafik (Calamus) |
| CRK | CRacK file (usually text) |
| CRP | Corel Presents Runtime Presentation |
| CRP | Visual dBASE Custom RePort file |
| CRP | dBASE IV encrypted database |
| CRS | WordPerfect 5.1 File Conversion Resource |
| CRS | WisoGermany street map |
| CRT | Internet security CeRTificate |
| CRT | Oracle terminal settings information |
| CRU | CRUSH compressed file archive |
| CSA | Comma Delimited textfile |
| CSC | Corel Script script |
| CSD | Corel WFN-Boss data file |
| CSG | Graph (Statistica/w) |
| CSH | Unix shell script (csh) |
| CSLM | Bitmap image (Zeiss CSLM file) |
| CSM | Borland C++ 4.5 precompiled headers |
| CSP | PC Emcee Screen Image |
| CSQ | Queries |
| CSS | Cascading Style Sheets |
| CSS | Stats+/Statistica datafile |
| CST | Macromedia Director CaST (resource) file |
| CSV | Comma Separated Values |
| CSV | CompuShow adjusted EGA/VGA palette |
| CSV | Comma Separated Values text file |
| CSY | EPOC Polymorphic DLL |
| CT | SciTex Continuous Tone bitmap image (32bit CMYK), see .SCT |
| CT | Bitmap image (32bit) (Iris CT format) (Iris printers) |
| CTC | PC Installer control file |
| CTF | Symphony character code translation file |
| CTF | Character code Translation File |
| CTL | Visual Basic ConTroL file |
| CTL | dBASE IV/Aldus Setup ConTroL file |
| CTL | Setup information |
| CTR | CorelTrace configuration file |
| CTS | Permanent location ConTentS (ABC programming language) |
| CTX | Visual Basic user control binary file |
| CTX | PGP ciphertext file |
| CTX | Course TeXt file (Microsoft online guides) |
| CTX | Compressed text |
| CTX | PGP signature file |
| CTX | Word and Works data file |
| CTY | Sim City saved city |
| CUBE | Bitmap image (Cubicomp/Vertigo image file) (Cubicomp PictureMaker) |
| CUBI | Bitmap image (Cubicomp/Vertigo image file) (Cubicomp PictureMaker) |
| CUE | MS Cue Cards data |
| CUF | C Utilities Form definition (Turbo C Utilities) |
| CUR | Windows 3.x/95/NT Cursor Resource |
| CUR | Games data file |
| CURSOR | Sun Cursor |
| CUT | Dr. Halo bitmap image |
| CV | Archive (Corel Versions) |
| CV | MS CodeView information screen |
| CV4 | Codeview-colorfile (Visual C++) |
| CVF | SuperStor compressed volume |
| cvf | Compressed Volume File |
| CVG | Calamus image format |
| CVP | WinFax cover page |
| CVS | Canvas bitmap image |
| CVT | dBASE IV backup file for ConVerTed database file |
| CVW | CodeView color file |
| CW2 | Chemische Strukturformeln von ChemWindows |
| CWA | Form File (C-Worthy) |
| CWEB | C Web |
| CWK | ClarisWorks document |
| CWL | ClarisWorks library |
| CWS | ClarisWorks stationery |
| CX | CodeMapper script |
| CXT | Macromedia Director Protected Cast (resource) file |
| CXX | C++ language source code file (Zortech C++, gcc) |
Did you like my page, one of my freeware applications or online tools?
Then, please donate via PayPal in order to help keeping its content free - each amount is welcome!