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Steam vs GOG Galaxy: catalog facts
Steam	GOG Galaxy
Freemium The client is free; games and other content are bought individually.	Free Free client; games are purchased individually.
Windows, macOS, Linux, Android, iOS	Windows, macOS
Native client for Windows, macOS and Linux Large store with free and paid games	DRM-free games with no launcher requirement once downloaded Can unify libraries from multiple other platforms in one view
Requires a Steam account Closed source	Cross-platform library integrations rely on unofficial connectors that can break Smaller game catalog than Steam or Epic on its own
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
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.