Extensions: 'C'
| Format | Description | Author | File / Link |
|---|---|---|---|
| C3D | Biomechanical data file format | Andrew Dainis | Download |
| C3D Format website | Motion Lab Systems, Inc. | LINK | |
| CAB | MS CAB file format with source | Download | |
| CACHE | Internet Explorer / Netscape Temporary Internet Files Cache (index.dat) | Will Kranz | Download |
| CADRG | Compressed ARC Digitized Raster Graphics (CADRG) | US DoD | Download |
| CAF | Apple Core Audio Format Specification 1.0 | Apple Inc. | LINK |
| CAL | Windows 3.1 Calendar Format | Microsoft Corp. | Download |
| CAM | Casio Camera Format (incomplete) | Kazuhiko Iwama | Download |
| CAP | SnifferPro 1.5.02 CAP file format | Big VuZZ | Download |
| CAS | Communicating Applications Specification v1.2 | DCA/Intel | Download |
| Communicating Applications Specification v1.3 (Addendum to 1.2) | DCA/Intel | Download | |
| Casio Calculator Files | Tom Wheeley | LINK | |
| CBD | Vector map data format for MapBrowser and MapWriter | Brian Reid / Steve Putz | Download |
| CD+G | CD+G Revealed: Playing back Karaoke tracks in Software | Jim Bumgardner | Download |
| CDA | CD Audio tracks file format | Wojtek Kaniewski | Download |
| High level overview of CD data layout | Andy Poggio | Download | |
| CDF | NetCDF (network Common Data Form) for scientific data | Russ Rew | LINK |
| NASA Common Data Format | NASA | LINK | |
| Cyberspace Description Format | Carl Tollander | LINK | |
| CDROM | Introduction to ISO 9660 file system CD-ROM Format | Clayton Summers | Download |
| CEG | Continuous Edge Graphic File Format | Max Maischein | Download |
| CEL | Autodesk Animator CEL File Format | Max Maischein | Download |
| CFF | The Compact Font Format Specification v1.0 (Acrobat) | Adobe | Download |
| CGE | CCD Astrocamera format CGE for the CCDGALRY Software | Hans-Rudolf Wernli | Download |
| CGM | CGM format description (MS Word) | Download | |
| CGM Open Consortium | 36282 | LINK | |
| Computer Graphics Metafile (CGM) Implementation Standard | US DoD | Download | |
| CHESSBASE | Lots of Chess utilities and information | LINK | |
| Chess Base (.CBI/.CBF/.ECO/.FBK) formats and sourcecode | Download | ||
| CHK | Scandisk .CHK files | Jeroen Mostert | Download |
| CHM | Microsoft's HTML Help (.chm) format (Incomplete) | Matthew T. Russotto | Download |
| CHR | Borland CHR File Format | Max Maischein | Download |
| CHT | ICQ Chat File Specification | Remy Lebeau | LINK |
| CIFF | Canon CIFF format | Canon | Download |
| CIN | Cinematic files from Id's Quake II | Tim Ferguson | LINK |
| CINEMA 4D | Cinema 4D v4.x file format - Amiga version only (Acrobat) | Maxon Computer | Download |
| CIT | Intergraph Raster File Format Reference Guide | Intergraph Corporation | LINK |
| CLARION | Clarion file formats (.DAT/.K??/.I??/.MEM/.HLP/.APP) | Jerzy Tarasiuk | Download |
| CLP | Windows 3.1 Clipboard Format | Microsoft Corp. | Download |
| CLR | Common Language Runtime (CLR) extensions to Microsoft PE (Portable Executable) | Download |
How to help
If you have any better information or if you find problems with these files or links please .