| Microsoft Backup Format | |
| Microsoft | |
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BKF is a archive file that stores Windows NT, XP Pro or XP Home system backup copy. BKF holds documents and folders chosen by the user.
BKF backup copy not anly can be used to restores files on the original system, but also on other Microsoft Windows family of operating systems. To restore the file on Windows 7, 8, 0r 10, it is recommended to use NTBackup tool available as separate product.
| .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 |