| .costyle |
Capture One Style File |
| .copreset |
Capture One Preset File |
| .cg3 |
Cabri 3D Document |
| .ctproject |
CrazyTalk Animator Project File |
| .cts |
CrazyTalk Script File |
| .cpd |
RoboHelp Cache Project Database |
| .cga |
Crytek Geometry Animation File |
| .chrparams |
CryENGINE Character Parameters File |
| .cyp |
Home Designer Pro Project File |
| .cdw |
KOMPAS Document |
| .cbh |
ChessBase Database Header File |
| .cbv |
ChessBase Database File |
| .cbg |
ChessBase Game Moves File |
| .cch |
.NET Security Resolution Cache File |
| .cef |
Class Action Gradebook Elementary File |
| .ced |
JVC Camera Video Data File |
| .cw |
CardWorks Template |
| .ckp |
SQL Server Checkpoint File |
| .ckb |
Cricket Audio Bank File |
| .cndx |
Avery DesignPro for Mac Label File |
| .cnd |
Melco Condensed Embroidery File |
| .car |
Car Explorer Data File |
| .crtr |
MultiAd Creator Pro Document |
| .csp |
Concept Server Page |