| 1. | .cc | C++ language source code file (gcc) ◊ CC language source code file (cc) ◊ Custom class (Visual dBASE) |
| 2. | .cca | Mail archive (cc:Mail) |
| 3. | .ccad | Data (ClarisCAD) |
| 4. | .ccb | Animated Button configuration (Visual Basic) |
| 5. | .ccc | Bitmap graphics (Curtain Call native format) ◊ Conversation (Microsoft Chat) |
| 6. | .ccf | Communications configuration file (Symphony) ◊ Configuration file (OS/2 Multimedia Viewer) |
| 7. | .cch | Chart (CorelChart) ◊ Image chip file (PhotoModeler) |
| 8. | .cci | CCITT Group 3 and Group 4 Encoding |
| 9. | .ccl | Communication Command Language file (Intalk) |
| 10. | .ccm | Mailbox (Lotus CC:Mail) |
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