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 running various versions of Linux, Unix, OS X or Microsoft Windows operating systems.

Amanda's developer and user community can easily be characterized as modest and understated. But given tens of thousands of systems being protected by Amanda, hundreds of thousands of downloads of the software and inclusion in every major distribution it is hard not to notice her. Amanda recently got the Linux Journal Readers' Choice Award for Favorite Backup System. O'Reilly considers Amanda one of the Top Five Open Source Packages for System Administrators.

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