| .blu |
FileMaker Pro Runtime Extension |
| .crx |
Chrome Extension |
| .cst |
Manga Studio Story File |
| .component |
Mac OS X System Component |
| .cdl |
CADKEY Wireframe Design File |
| .cleo |
CLEO Grand Theft Auto Mod File |
| .cmp |
Windows Connection Manager Profile |
| .ccip |
Curse Client Install Package |
| .codaplugin |
Coda Plug-in |
| .ccx |
Click & Create Extension |
| .cox |
Click & Create Extension |
| .colorpicker |
Color Picker Plugin |
| .cvt |
Canvas External Tool File |
| .dbx |
Outlook Express E-mail Folder |
| .dfp |
Fusion Plugin File |
| .dpm |
Pro Tools Plugin File |
| .dlu |
3ds Max Utility Plug-in File |
| .dlr |
finalRender Plugin |
| .dlo |
3ds Max Plug-in |
| .dvtplugin |
Xcode DVT Plug-in |
| .ecf |
Outlook Add-in |
| .eaz |
ArcGIS Explorer Add-in File |
| .ext |
Norton Commander Extension |
| .epk2 |
E-Prime 2.0 Package File |