Tartarus provides a nice wrapper around basic Unix tools such as tar, find and curl (well, that's not that basic) to provide a seamless backup solution, aimed at automatic gathering and backup. It has the ability to do full as well as incremental backups
This project is an implementation of FTP server in pure Ruby. It features the ability to start a FTP server and publish there any content you want. You are not limited to publish file system subtrees. All FTP hierarchy is dynamic and under your control.
verschlüsseltes backup auf ftp vom provider