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rdiff-backupbup
Free

Free and open source under the GPL.

 Free

Free and open source.

Windows, macOS, Linux, Command line macOS, Linux, Command line
  • The newest backup is a plain mirror you can read without the tool
  • Reverse deltas keep history cheap while the current copy stays instant
  • Global deduplication across and within files
  • Fast incremental saves
  • No client-side encryption
  • Restoring very old versions means replaying many increments
  • Command line only
  • Development discussion happens on a mailing list rather than GitHub issues
Downloadable app Downloadable app
Open source Open source
License: GPL-2.0 License: LGPL-2.1
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked September 22, 2026

Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.