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ChimeraOS vs SteamOS: catalog facts
ChimeraOS	SteamOS
Free Free to download.	Free Provided by Valve for supported devices at no charge.
Linux	Linux
Fully controller-compatible interface Automatic updates that run in the background	Official operating system from Valve Built around the Steam library and interface
Not designed as a general desktop system Built around Steam Big Picture	Only supported on specific devices and some AMD-powered PCs Centred on Steam rather than general desktop use
Operating system	Operating system
Open source	Closed source
License not stated	License not stated
Not stated if an account is 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 23, 2026

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