| cskin | CD Art Display Skin |
| csl | CineStyle Color Lookup Settings |
| ctbodyfitting | CrazyTalk Animator Actor Fitting |
| ctf | AVG Update Control File |
| cui | Autodesk AutoCAD Custom Workspace |
| cwl | TeXstudio Completion Word List |
| cwy | ChordWizard Songtrix Style |
| cw_ | CorelDraw Workspace Description Data |
| cxz | PND Scanner Configuration |
| cyberducklicense | Cyberduck Donation Key |
| cyberduckprofile | Cyberduck Connection Profile |
| d2r | DEM2RWX Saved Settings |
| dapf | DinkeyAdd Parameter Data |
| db7 | Casio WK-3000 User Drawbar Organ Tones |
| dbgdt | IAR Embedded Workbench Debugger Settings |
| dbh | CodeWarrior Debug Preferences |
| dbl | DAZ Brick Light |
| dcc | Nokia Dynamic Camera Configuration |
| dcls | Catia V4 Settings |
| dcst | Adobe InDesign Document Settings |
| def | Binary Editor Definition Data |
| deft | Juice Grinder Defaults |
| deny | TCP Wrapper Access List Data |
| desktop | Desktop Entry |
| dicproof | Microsoft Dictionary Proofing |
| dinfo | DivX Temporary Video Info |
| dirac | DIRAC Configuration Data |
| directory | KDE Folder View Properties |
| dkm | DynaComm Asynchronous Keyboard Mapping |
| dno | DriveTools SP DriveExecutive Parameters |
