| Nero BackItUp Archive Format | |
| Nero | |
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File with a .NBA extension contains an archive of compressed files stored in a proprietary format. NBA files are usually burned on optical drivers - CDs and DVDs
NBA format is used by the BackItUp software, a part of the Nero Multimedia Suite package. The software is utilised for the purpose of compression and creation of backup copies.
Windows
| .ab | Google Android Debug Bridge Backup Format |
| .aba | Palm Address Book Archive Format |
| .abbu | Apple Address Book Archive Format |
| .abf | Adobe Binary Screen Font Format |
| .abk | Ability Write Backup Format |
| .acp | Alfresco Exported Repository Format |
| .adi | Active@ Disk Image Format |
| .aea | Ae Timer Alarm Document Format |
