| .cba |
Comic Book ACE Archive |
| .cxp |
CX-Programmer Project File |
| .clips |
Coda Clips File |
| .capx |
Construct Compressed Project File |
| .caproj |
Construct Project File |
| .ccs |
CodeCharge Studio Project File |
| .car |
Car Explorer Data File |
| .csx |
Visual C# Script |
| .csp |
Concept Server Page |
| .ctx |
Visual Basic Control Binary File |
| .ctxt |
BlueJ Context File |
| .cvsrc |
CVS Command File |
| .cxt |
CX-Programmer Project Text File |
| .ccscc |
ClearCase Source Control Info File |
| .ci |
Windows Content Indexer Catalog File |
| .cpb |
Comicino Studio Project File |
| .ckbx |
Cricket Audio XML Bank Description File |
| .ctc |
Visual Studio Command Table Configuration File |
| .cto |
Visual Studio Binary Command Table Output File |
| .ctsym |
Visual Studio Command Table Output File |
| .ccc |
Dev-C++ Code Completion Cache |
| .cmake |
CMake File |
| .chef |
Chef Source Code File |
| .cham |
Compiled HAM File |