| 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 | CFast Graphics 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 |
| cgd | CricketGraph Data |
| cgh | Clinical Genomics Data |
| cgk | BlueSoleil Driver Data |
| cgm | Altair FEKO Matrix Equation Data |
| cgn | PoldatDB Data |
| cgns | CFD General Notation System Data |
| cgp | PixelCryptor Encrypted File |
| cgrp | Avid Pro Tools Clip Group File |
| cgt | SmartCAM Code Generation Template |
| cgx | Autodesk Land Desktop Label Style |
| ch10 | IRIG 106 Original Recording Data |
| ch5 | VisIt CH5 Data |
| ch6 | ZX-Paintbrush Character Data |
