| 4log | 4D Database for Mac Log |
| 4mp | 4-MP3 Database |
| 4mt | MacroToolbar Macro Set |
| 4pk | Perfect Keyboard Macro Set |
| 4qr | 4D Database Quick Report Document |
| 4sc | forScore Metadata |
| 4st | 4D Database Document SAVE SET Data |
| 4sw | 4DOS Swapfile |
| 4tw | Macro Toolworks Macro Set |
| 4ug | 4D Database Users and Groups Data |
| 4vr | 4D Database Saved Variable Data |
| 4ws | Macro Toolworks Data |
| 545 | Aimutation Skin |
| 5br | Fivebar Geometry Data |
| 5d | Microsoft Works Data |
| 5fs | VU-AMS Recording Data |
| 5vw | Accellent 5View Packet Capture |
| 5xs | Line 6 POD HD500X Edit Setlist Data |
| 64d | PC64 Emulator Data |
| 67c | FLEXnet Manager Data |
| 73b | TI-73 Backup |
| 73c | TI-73 Constant |
| 73d | TI-73 Calculator Graph Database |
| 73g | TI-73 Group Data |
| 73l | TI-73 Data List |
| 73m | TI-73 Calculator Matrix Data |
| 73n | TI-73 Real Number Data |
| 73p | TI-73 Calculator Program |
| 73q | TI-73 Calculator Certificate Data |
| 73s | TI-73 String Data |
