Flyback: Inspired by Apple's Time Machine, the guys at Flyback have used Linux technology and software to build an alternative. Although the software is quite new, the premise is solid and development is fast. Flyback allows you to take snapshots of your backup source and allows you to navigate through them while letting you recover and work with different versions of the same files. Although the software is created by one man, the level of polish is impressive, and it is an easy application that can allow you to store backups in a systematic format. Flyback should be included in your distribution's package manager and installing it should be simple. If your distribution does not offer flyback, you can get it from here.

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Running it is as simple as launching it from the Applications -> System Tools Menu.