| caccrt | CACAO Cartesian Chemical Modeller Data |
| cache-2 | VLC Media Player Font Cache |
| cache-3 | VLC Media Player Font Cache |
| cache2 | Pro/ENGINEER Cached Data |
| cachedmsg | Valve Steam Cache Data |
| cachedump | Cachedump Data |
| cadc | Corpatla Data Container |
| cadpac | CADPAC Chemical Modeller Input Data |
| cae | Abaqus/CAE Model Database |
| caf | Cal3D Binary Animation |
| cag | CADfix ASCII Geometry Data |
| cag | Capella Gallery Data |
| cag | Microsoft ClipArt Gallery Database |
| cah | Ulead Photo Explorer Thumbnail Cache |
| cal | Autodesk 3D Studio Max Pose Adjustment Data |
| cal | CryENGINE Character Animation List Data |
| cal | HTML Calendar Maker Pro Calendar Data |
| cal | Keysight PLTS Calibration Data |
| cal | Lego Mindstorms NXT Sensor Calibration Data |
| cal | Radiance Function File |
| cal | SuperCalc WorkSheet |
| cal | SWAT Auto-calibration Data |
| cal3d | Cal3D Data |
| calb | Coolect Album Data |
| caldb | HEASARC Calibration Database |
| calib | Chief Architect Library |
| calibre | Calibre Device Information Data |
| calibz | Chief Architect Library Archive |
| calls | NimbleGen Gene Expression Value Data |
| cam | ADS40 Camera Calibration Data |
