RSYNC Backup front-end with Web Interface, email reports with attached summary. Simple to use; back up servers with a single line, or your entire server farm from a single machine. Custom email tags sort responses in your MUA. Supports authentication.
dumpnet is a collection of bash scripts that allows you to backup multiple servers simultaneously. You can do incremental file system dumps with tar, dump and rsync, backup databases and much more. AIDE can also easily be integrated.
Simple file backup and changes tracking system, targeted to unattended night incremental backups of samba shares in departamental servers, and recovery services that can be managed directly by users via a simple web browser (login to their smb account).
A set of bash-functions (probably becomes scripts instead) that perform backups (full and incremental) on blockdevices with encryption and compression using standard tools like tar and mcrypt.