Deja Dup is a simple backup tool. It hides the complexity of backing up the Right Way (encrypted, off-site, and regular) and uses duplicity as the backend. (GPL)
Linux
Duplicity backs directories by producing encrypted tar-format volumes and uploading them to a remote or local file server. (GPL)
Linux - FreeBSD
LuckyBackup is an application for data back-up and synchronization powered by the rsync tool. It is simple to use, fast, safe, reliable and fully customizable. (GPL)
Linux
rdiff-backup backs up one directory to another, possibly over a network. (GPL)
Linux - FreeBSD - Windows - macOS
4 applications