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GE-Proton vs CrossOver: catalog facts
GE-Proton	CrossOver
Free Free, with source published on GitHub.	Paid Costs $74 with a free 14-day trial.
Linux	macOS, Linux
Extra patches beyond Valve's official Proton Can be chosen per game in Steam	Runs Windows programs without a Windows licence No full virtual machine needed
Must be installed manually or with a helper tool Not an official Valve release	Paid after the trial Not every Windows program or game works
Downloadable app	Downloadable app
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	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.