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Plakar vs Tarsnap: catalog facts
Plakar	Tarsnap
Free Free and open source.	Paid Prepaid usage billing at $0.25 per GB-month stored and $0.25 per GB transferred, with no…
Linux, Self-hosted, Command line	macOS, Linux, Command line
Encrypted, deduplicated snapshots Web interface for browsing and restoring backups	Client-side encryption with keys only you hold Deduplication uploads only changed data
Command-line oriented setup Younger project than established tools like restic or Borg	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 not stated	License not stated
Not stated if an account is needed	Account needed
Works offline	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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