| catprocess | CATIA Process Data |
| catraster | CATIA Raster Data |
| catresource | CATIA Resource Data |
| catsettings | CATIA Settings Data |
| catshape | CATIA Shape Data |
| catswl | CATIA CATswl Data |
| catsystem | CATIA Functional Systems Data |
| cav | Kintraks Database |
| caw | SSIS Cache Data |
| cawr | Espresso Workreport Document |
| cb1 | CARE-S InfoWorks Biochemical Oxygen Detail Data |
| cb3 | CliBench Mk III Data |
| cb4 | Actuate Analytics Cube Data |
| cb5 | CubeAnimator LED Data |
| cba | DB/TextWorks SQL Textbase Definition |
| cbb | DB/TextWorks SQL Textbase Structure Definition |
| cbc | MODFLOW Cell-by-cell Flow Data |
| cbcp | CodeBaby Production Studio Character Package |
| cbddlp | ChiTuBox Sliced 3D Object |
| cbg | CyberGauge Data File |
| cbin | CACTVS Binary File |
| cbk | DYMO CardScan Backup Data |
| cbml | Vernier Logger Pro Data |
| cbmv | Comic Book Millennium Collection Data |
| cbo | Microsoft Interactive Training Bookmark |
| cbor | Concise Binary Object Representation Data |
| cbs | DB/TextWorks SQL Textbase Structure Data |
| cbw | Cardbox Workspace Data |
| cbx | IBM Rational XDE Collaboration File |
| cbx | Westok Cellbeam Data |
| cbxx | Westok Cellbeam Data |
| cc | STK City Database Counties |
| cc1 | Briggs Softworks Calendar Commander Data |
| cc1 | CARE-S InfoWorks Chemical Oxygen Detail Data |
| cc2 | Calendar Commander v2 Calendar Data |
