Where NixOS fits
Use it when reproducibility and configuration history are central to your setup.
Check before you choose
Allow time to learn the configuration model and keep a working rollback path.
Find the right edition
Start with the destination for your device or the publisher's website. Use the current requirements and terms there to confirm the edition you need.
Compare the workflow
A desktop distribution, a server system and a specialist toolkit serve different purposes. Decide whether you want a fixed release, rolling updates or a declarative setup before comparing desktop appearances.