| cmb | Chromeleon Backup Archive |
| cmb | QIP Infium Contact List Backup Data |
| cmb | Reason Combinator Instrument Patch |
| cmb | SGI Scalable Graphics Compositor Combination File |
| cmb | XTree for Windows Button Bar Data |
| cmbak | CET Designer Drawing Backup |
| cmbd | GMI WellCheck Combined File |
| cmbl | Vernier Logger Pro Data |
| cmc | Comic Collector Collection Data |
| cmd | OS/2 Warp REXX Script |
| cmd | Summit Contact Manager Database |
| cmd5 | CrystalMaker V5 Data File |
| cmdb | CFX Mesh Database |
| cmdf | CrystalMaker V2 Data File |
| cmdl | Cafu Engine Model Data |
| cmdrw | CET Designer Drawing Data |
| cmdt | ClarisWorks Dictionary Data |
| cmf | Cal3D Binary Mesh Data |
| cmf | CaseMap File Viewer Definition |
| cmf | CIFMIF File |
| cmf | CorelDraw Metafile |
| cmf | PBD-14 CMF Data |
| cmfav | CET Designer Favorites Data |
| cmfrl | CET Designer Furniture Layout Data |
| cmh | PLINK Cochran Mantel Haenszel 2x2xK Test Report |
| cmh2 | PLINK Cochran Mantel Haenszel IxJxK Test Report |
| cmi | Camomile Interface Data |
| cmj | ControlMyJoystick Profile |
| cml | Chemical Markup Language File |
| cml | CryptoMailer Encrypted File |
