| Abbreviation | Definition |
|---|---|
| XG2 | Database Index |
| XG3 | Database Index |
| XG4 | Database Index |
| XG5 | Database Index |
| XG6 | Database Index |
| XG7 | Database Index |
| XG9 | Techno Toys XG-909 MIDI Drum Machine File |
| XGL | MegaBitz Graphics Language file |
| XGM | Techno Toys XG-909 MIDI Drum Machine File |
| XGO | GeoConcept File |
| XGO | LogMate for Windows File |
| XGO | Paradox Database-related File |
| XGP | PicturePlayer Password Protected File |
| XGR | Graph Edit XML Graph |
| XGS | PicturePlayer Scrambled File |
| XGZ | MegaBitz Vector drawing |
| XI | Fastracker Instrument file |
| XIF | eXtended Image File Format Graphics file |
| XIF | Wang Image File |
| XIF | Xerox Image File |