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BorgBackupTarsnap
Free

Free and open source, with no paid edition.

 Paid

Prepaid usage billing at $0.25 per GB-month stored and $0.25 per GB transferred, with no…

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
  • Client-side encryption with keys only you hold
  • Deduplication uploads only changed data
  • 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
  • Command line only, with no graphical interface
  • No native Windows client, only Cygwin or WSL
Downloadable app Downloadable app, Hosted service
Open source Closed source
License: BSD-2-Clause License not stated
No account needed Account needed
Works offline Needs internet

Checked September 20, 2026

Checked September 23, 2026

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