| .component |
Mac OS X System Component |
| .cp9 |
ChoicePoint Encrypted File |
| .copy |
Sony Ericsson Protected Content File |
| .charset |
Character Set |
| .chord |
Song Chords File |
| .cgf |
Crytek Geometry Format File |
| .cmx |
Corel Metafile Exchange Image File |
| .cam |
Gerber CAM Job File |
| .ckt |
CircuitMaker File |
| .c4d |
Cinema 4D Model File |
| .chw |
Compiled Help Index File |
| .cyi |
Clustify Input File |
| .cyo |
Clustify Output File |
| .camrec |
Camtasia Studio Screen Recording |
| .cp3 |
Grand Prix 3 Cockpit Shape File |
| .cso |
Compressed ISO Disk Image |
| .cpc |
CPC Compressed Image File |
| .ctg |
Canon Digital Camera Catalog File |
| .cpgz |
Compressed CPIO Archive |
| .cpio |
Unix CPIO Archive |
| .cfl |
IMVU Product File |
| .c00 |
WinAce Split Archive File |
| .cty |
SimCity City File |
| .ctl |
Visual Basic UserControl Object File |