| blu | FileMaker Pro Runtime Extension |
| btapp | uTorrent Application |
| btm | 4DOS Batch File |
| bundle | Mac OS X Application Plug-in |
| caction | Automator Converter Action |
| cgi | Common Gateway Interface |
| cla | Java Class Data |
| clas | Java Class Data |
| class | Java Class Data |
| cleo | CLEO Grand Theft Auto Mod |
| clix | CLIX Command |
| cls | Java Class Data |
| cmd | Command File |
| cnv | Microsoft Document Converter |
| cod | Microsoft C Compiler Output |
| coff | Common Object File Format Image |
| colorpicker | Color Picker Plugin |
| com | Executable File |
| com | Windows Command File |
| command | Terminal Command |
| cpl | Control Panel Item |
| cyw | Rbot.CYW Worm |
| dek | Eavesdropper Batch |
| derp | Device Environment Replacement Program |
| dexe | Microsoft Virtual PC for Mac Executable |
| dld | CR10X EdLog Compiled Program |
| dll | Windows Dynamic Linked Llibrary |
| dpm | Avid Pro Tools Plugin |
| drpx | Wii U Decrypted Executable |
| drv | Windows Device Driver |
