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Déjà Dup vs Kopia: catalog facts
Déjà Dup	Kopia
Free Free and open source under the GPL, part of the GNOME project's apps.	Free Free and open source, with no paid edition.
Linux	Windows, macOS, Linux, Command line
Encrypts, compresses and schedules backups with almost no configuration Incremental, so you can restore from any particular past backup	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
Personal files only; the project says it does not support complete system recovery Linux and GNOME only	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: GPL-3.0	License: Apache-2.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 20, 2026

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