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rustic vs Kopia: catalog facts
rustic	Kopia
Free The open-source application is available without a license fee.	Free Free and open source, with no paid edition.
Windows, macOS, Linux	Windows, macOS, Linux, Command line
Uses the established restic repository format	A desktop app and a command line tool that share the same repository format End-to-end encryption with keys you control, plus compression and deduplication
It is younger than restic and compatibility should be checked for your workflow.	Backs up the files and folders you choose; it is not a whole-disk imaging tool Still pre-1.0, so repository format changes between versions are possible
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: Apache-2.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 20, 2026

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