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Kopia vs Plakar: catalog facts
Kopia	Plakar
Free Free and open source, with no paid edition.	Free Free and open source.
Windows, macOS, Linux, Command line	Linux, Self-hosted, Command line
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	Encrypted, deduplicated snapshots Web interface for browsing and restoring backups
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	Command-line oriented setup Younger project than established tools like restic or Borg
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked September 23, 2026

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