ProjectPage Amanda
Amanda is the world's most popular Open Source Backup and Archiving software. Amanda allows System Administrators to set up a single backup server to back up multiple hosts to a tape- or disk-based storage system. Amanda uses native dump and/or GNU tar facilities and can back up a large number of workstations and servers running various versions of Linux, Unix or Microsoft Windows operating systems.
For more information, see Amanda open source backup tool for MySQL
The current stable release is 2.5.2 (released on May 3, 2007)