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BorgBackupDuplicity
Free

Free and open source, with no paid edition.

 Free

Free and open source under the GPL.

Linux, macOS, Command line macOS, Linux, Command line
  • Content-defined chunking that survives files being renamed, moved or shifted around
  • Authenticated AES encryption, so an untrusted backup server only ever sees ciphertext
  • Encrypts and signs everything before it leaves the machine
  • Supports a very wide range of remote storage back ends
  • Primarily a Unix tool; on Windows it needs WSL or Cygwin rather than a native build
  • Borg 2 is still in beta, ships breaking changes between betas and should not hold production backups
  • Long incremental chains make restores slow and fragile
  • Periodic full backups are needed to keep chains manageable
Downloadable app Downloadable app
Open source Open source
License: BSD-2-Clause License: GPL-2.0
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked September 20, 2026

Checked September 22, 2026

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