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Apple Time Machine vs Kopia: catalog facts
Apple Time Machine	Kopia
Free Included free with macOS.	Free Free and open source, with no paid edition.
macOS	Windows, macOS, Linux, Command line
Built into macOS with no extra software to install Automatic hourly snapshots require no ongoing manual effort	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
macOS only, no support for Windows or Linux Needs a dedicated external drive or network share for storage	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
Closed 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.