| .cfb |
Compound Binary File |
| .cr3 |
Canon Raw 3 Image File |
| .cag |
ClipArt Gallery Package |
| .ccx |
Click & Create Extension |
| .cox |
Click & Create Extension |
| .cnv |
Canvas 6-8 Drawing File |
| .cwf |
CorelDRAW Workspace File |
| .col |
Capture One Session File |
| .cb7 |
CB7 compression algorithm archive file |
| .chml |
Chameleon Encrypted Database File |
| .cmbl |
Logger Pro Data File |
| .ck9 |
Cook'n Cookbook Backup File |
| .cl4 |
Easy CD Creator 4 Project File |
| .cfge |
Jewel Quest Configuration File |
| .cos2 |
Pinnacle Studio Cache File |
| .cfr |
Cross Fire Replay File |
| .cvf |
CPU-Z Validation File |
| .cdc |
AutoCAD DesignCenter Preview Cache File |
| .cimg |
CImg Image File |
| .cvt |
Canvas External Tool File |
| .cl |
Cursor Library |
| .ci |
Windows Content Indexer Catalog File |
| .cme |
Crazy Machines Experiment File |
| .cryptra |
Cryptra Encrypted File |