| buj | Personal Backup Saved Task |
| bup | DVD Information Backup |
| bvd | Bitdefender Vault File |
| bxt | ETH2DALI Firmware Data |
| bzi | DBAN Kernel Image |
| bzplug | Corel AfterShot Pro Plugin Bundle |
| bzs | BlueZone Script |
| c2a | Casio ClassPad II Add-in |
| c2u | Texas Instruments CBL 2 OS File |
| c32 | Syslinux COM32 Module |
| cache | General Cache File |
| cat | Microsoft Windows Security Catalog |
| cb | Microsoft Windows 95 Clean Boot File |
| cbplugin | Code::Blocks Plugin |
| cbs | Comodo Backup Job Script |
| cdd | CD Architect Driver |
| cdev | Macintosh II Control Panel |
| cdl | Maxon Cinema 4D Plugin |
| cdl64 | Maxon Cinema 4D 64-bit Plugin |
| cef | CenturionMail Encrypted Email |
| cgz | Linux Drivers Archive |
| chunk001 | File Splitter Split Archive Part 1 |
| cks | Windows CE ROM Image Checksum |
| clb | COM+ Catalog |
| cm0012 | WD TV Live Corrupt Data |
| cmp | SimCreator Script |
| cng | C-NaviGator Software Update |
| cng3 | C-NaviGator Software Update |
| cn_ | Compressed Windows Help Content |
| component | Mac OS X System Component |
