BorgBackup: Deduplicating archiver with compression and encryption
If you prefer a similar approach, but as a single compiled binary, there's Restic: <a href="https://github.com/restic/restic">https://github.com/restic/restic</a><p>Update: yet <i>another</i> take on basically the same approach, also as a self-contained binary: <a href="https://github.com/kopia/kopia">https://github.com/kopia/kopia</a>