| .clkc |
Clicker Connect Set File |
| .clktk |
Clicker Talk Set File |
| .clkm |
Clicker Matching Set File |
| .cdml |
Creately Diagram File |
| .cebx |
Apabi XML eBook File |
| .cdpx |
ConceptDraw PROJECT XML File |
| .circuit |
KTechlab Circuit Design File |
| .cyberduckprofile |
Cyberduck Connection Profile |
| .cdm |
NTI CD-Maker Image |
| .ckbx |
Cricket Audio XML Bank Description File |
| .cbxml |
CodeBox Library |
| .chksplit |
Archiver Split Checksum File |
| .cdtx |
ConceptDraw PRO XML Template |
| .cdsx |
ConceptDraw PRO XML SlideShow File |
| .cx5 |
Clone Manager XML File |
| .crop |
Crick Software Options File |
| .ctd |
Cherrytree XML Document |
| .cfxr |
Cocoa Sfxr File |
| .csl |
CineStyle Color Lookup File |
| .camerror |
Camtasia Studio Error File |
| .dae |
Digital Asset Exchange File |
| .dst |
AutoCAD Sheet Set File |
| .dek |
Magic: The Gathering Deck File |
| .dproj |
Delphi Project |