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Tarsnap vs BorgBase: catalog facts
Tarsnap	BorgBase
Paid Prepaid usage billing at $0.25 per GB-month stored and $0.25 per GB transferred, with no…	Freemium 10 GB free, with paid plans from $2.50 per month.
macOS, Linux, Command line	Web
Client-side encryption with keys only you hold Deduplication uploads only changed data	Client-side encryption with your own key Append-only repositories protect against deletion
Command line only, with no graphical interface No native Windows client, only Cygwin or WSL	Needs Borg or Restic set up on each machine Free tier is limited to 10 GB
Downloadable app, Hosted service	Hosted service
Closed source	Closed source
License not stated	License not stated
Account needed	Account needed
Needs internet	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.