| .c2d |
WinOnCD Disc Image |
| .cyw |
Rbot.CYW Worm File |
| .ch3 |
Harvard Graphics DOS Chart File |
| .compressed |
WordCompress Compacted Web File |
| .case |
SlipCover Case Template |
| .comfycakessave-ms |
Comfy Cakes Saved Game |
| .cem |
Children of the Nile Model File |
| .chesstitanssave-ms |
Microsoft Chess Titans Saved Game |
| .cham |
Compiled HAM File |
| .chv |
ChView Interactive Star Map File |
| .crysisjmsf |
Crysis Saved Game |
| .crysispsf |
Crysis Warhead Saved Game |
| .cff |
Common File Format |
| .c2u |
Texas Instruments CBL 2 OS File |
| .csutil |
ColorSync Utility Folder |
| .chr0 |
Wii Model Animation File |
| .clr0 |
Wii Color Swapping Animation File |
| .cpu |
Virtual CPU File |
| .cv |
CodeView Data File |
| .cis |
CheckInbox Settings File |
| .cs1 |
CaptureShop 1-shot Raw Image |
| .dat |
Data File |
| .db |
Mobile Device Database File |
| .dll |
Dynamic Link Library |