| filename extensions | art-335 |
| bck | |
| TechTarget file types | art-336 | BCK-Backup-file |
| TechTarget file types | art-336 | BCK-BackupExpress-Pro-file |
| TechTarget file types | art-336 | BCK-Unknown-Apple-II-File |
| TechTarget file types | art-336 | BCK-VMS-VAX-BaCKup |
| TechTarget file types | art-336 | BCK-VMS-VAX-backup-file |
| English | eng-000 | Backup file |
| English | eng-000 | BackupExpress Pro file |
| English | eng-000 | Unknown Apple II File |
| English | eng-000 | VMS/VAX BaCKup |
| English | eng-000 | VMS/VAX backup file |
| English | eng-000 | VMX Backup File |