| ca3 | STABCAL Calculation Data |
| ca3 | Casio WK-1800 Save All Data |
| ca4 | STABCAL Calculation Data |
| cae | Abaqus/CAE Model Database |
| cag | Microsoft ClipArt Gallery Database |
| cah | Ulead Photo Explorer Thumbnail Cache |
| cal | Radiance Function File |
| cal | Lego Mindstorms NXT Sensor Calibration Data |
| cal | Keysight PLTS Calibration Data |
| cal3d | Cal3D Data |
| calibre | Calibre Device Information Data |
| cam | Minolta Vivid 3D Scanner Camera Data |
| camp | WCS Color Appearance Model Profile |
| camt | SEPA CAMT Data |
| cap | Libpcap Captured Packets |
| capt | Linrock Capito Data |
| caro | Adobe Acrobat Creator Code |
| castep | CASTEP Data |
| cat | TINA Pro Catalog |
| cat | Quicken IntelliCharge Categorization |
| cat4d | Maxon Cinema 4D Catalog |
| catalog | Catia Catalog |
| catshape | CATIA Shape Data |
| cav | Kintraks Database |
| caw | SSIS Cache Data |
| cb1 | CARE-S InfoWorks Biochemical Oxygen Detail Data |
| cb3 | CliBench Mk III Data |
| cb4 | Actuate Analytics Cube Data |
| cba | DB/TextWorks SQL Textbase Definition |
| cbb | DB/TextWorks SQL Textbase Structure Definition |
| cbg | CyberGauge Data File |
| cbin | CACTVS Binary File |
| cbk | DYMO CardScan Backup Data |
| cbml | Vernier Logger Pro Data |
| cbo | Microsoft Interactive Training Bookmark |
