| cf8 | Cashflow Manager v8 Data |
| cf9 | Cashflow Manager v9 Data |
| cfb | Spike2 Filter Bank Data |
| cfbx | Spike2 v7 Filter Bank Data |
| cfd | CryptoForge Document |
| cfdg | Context Free Design Grammar |
| cfe | 1C:Enterprise Configuration Extension Data |
| cfe | CryptoForge Encrypted |
| cff | Docuware Content Folder File |
| cff2 | Kodak Pandora Exported Data |
| cfgr | BenMAP Configuration Results |
| cfh | Fieldbus Foundation Capabilities Data |
| cfk | Microsoft Developer Studio Diagram |
| cfl | 1C:Enterprise Auxiliary Data |
| cfl | IMVU Product Data |
| cflt | CATS Flat File |
| cfm | Altair FEKO CADFEKO Model Mesh Data |
| cfog | Cloudfogger Encrypted Data |
| cfos6link | cFos IPv6 Link Registration Key |
| cfospnet | cFos Personal Net Registration Key |
| cfosspeed | cFosSpeed Registration Key Data |
| cfp | Intuit Quickbooks Cash Flow Projector File |
| cfs | Altair FEKO CADFEKO Workspace Data |
| cfs | ChatFactory Script |
| cfs | Lucene Single Compound File |
| cfs | Zaplots CFS Console Data |
| cft | Microsoft SQL Server Data Replication Conflict Tables |
| cfv | CFView Data |
| cfw | ChemFinder Form File |
| cfx | Altair FEKO CADFEKO Model Data |
| cfx | CFX Case File |
| cfx | Lucene 2 Compound File |
| cfx | Picasa Collage Data |
| cgb | Nintendo GameBoy Color ROM Image |
| cgc | Compressed Gamecube Disk Image |
