Incremental open-source backup software that supports command-line?

Question

Is there any freeware and possibly open source windows software that could do the following file backup tasks:

• backup to ftp server, e-mail, local/network/removable disks
• incremental file backup
• data compression
• data encryption
• can run as a windows service or at least supports command-line params (to be passed from windows scheduler)

Answer 1

Check out Duplicity. It requires POSIX, but you can always install Cygwin to get it on Windows.