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rustic vs Tarsnap: catalog facts
rustic	Tarsnap
Free The open-source application is available without a license fee.	Paid Prepaid usage billing at $0.25 per GB-month stored and $0.25 per GB transferred, with no…
Windows, macOS, Linux	macOS, Linux, Command line
Uses the established restic repository format	Client-side encryption with keys only you hold Deduplication uploads only changed data
It is younger than restic and compatibility should be checked for your workflow.	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
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 23, 2026

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