Island Codeworks Backup Professional with DeltaBIT Technology. 

FTP-based backup program for Windows. Features include easy-to-use user interface, flexible service-based scheduling, 128 bit data encryption, data compression (DeltaBIT and LZSS) email notifications. Shareware. $35
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SynchronEX File Sync/FTP/DAV for Linux 

Robust multi-directional file tree synchronization and backup over local & network paths in any situation: From laptop synchronization to ZIP'ed backup to incremental FTP/DAV website upload. True synchronization of (re)moved files. Scheduled tasks.
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SynchronEX File Synchronizer, Backup/FTP 

Robust multi-directional file tree synchronization and backup over local & network paths in any situation: From laptop synchronization to ZIP'ed backup to incremental FTP/DAV website upload. True synchronization of (re)moved files. Scheduled tasks.
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SyncFolder 

SyncFolder helps you to synchronize two or more folders/computers and to backup your important data. All sync-settings can be saved in a syncfolder-projectfile for later execution or scheduled execution. Many features available.
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Handy Backup Pro 

Easy-to-use and powerful backup program for Windows 9x/NT/2000/Me/XP. Can work with CD-R/W, FTP or LAN. Flexible scheduler, strong file encryption and multichoice ZIP compression. The program can be run as a service under Windows NT/2000/XP.
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ABMD 

Automatically Backup My Documents (ABMD) is a unique backup solution that can help you with your data archiving needs.
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