| .cld |
Canon CD Label Template |
| .cph |
Corel Print House File |
| .comicdoc |
Comic Life Document |
| .cd2 |
Click'N Design 3D File |
| .csd |
Steam Game Data Backup File |
| .cbf |
Calendar Builder File |
| .cpy |
3ds Max Copy Track File |
| .cal |
Calendar File |
| .clt |
Clarity Legal Transcript File |
| .cov |
Fax Cover Page File |
| .cpe |
Fax Cover Page File |
| .cw |
CardWorks Template |
| .cndx |
Avery DesignPro for Mac Label File |
| .crtr |
MultiAd Creator Pro Document |
| .cl2arc |
Comic Life 2 Archive file |
| .cwt |
Cakewalk SONAR Template |
| .compositiontemplate |
Invantive Composition Template |
| .comiclife |
Comic Life Document |
| .caj |
Chinese Academic Journal File |
| .clkd |
Clicker Docs File |
| .clkb |
Clicker Books File |
| .clkc |
Clicker Connect Set File |
| .cdml |
Creately Diagram File |
| .consis |
Sciral Consistency Document |