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GNU Guix vs Nix: catalog facts
GNU Guix	Nix
Free Free software from the GNU Project with no paid tier.	Free Free and open source under the LGPL.
Linux, Command line	macOS, Linux, Command line
Reproducible shell environments, containers and systems Per-user package management without superuser privileges	Atomic upgrades and instant rollback of an entire system or profile Per-project development shells that are identical on every machine
Configuration requires learning Guile Scheme Only free software is packaged, so some proprietary drivers and apps are not included	The Nix language and concepts are a genuinely steep learning curve The store grows large and needs regular garbage collection
Downloadable app, Operating system	Downloadable app
Open source	Open source
License not stated	License: LGPL-2.1
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 22, 2026

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