Backup & restore using set of dvds
Registry Backuper is a free backup and restore registry utilities
backuppc: bkp_client
A script that lets you find old versions of modified & deleted files.
Mail ARchiver
Java Library for backing up MySQL Databases.
Mirroring lvm2 volumes efficiently by transferring changed chunks only
A perl daemon to create a "timemachine" lookalike backup with Dirvish.
FTP to Zip takes browser based FTP backup of WordPress
Bare Metal Linux Disaster Recovery software