Proton (software)

For the email service provider, see Proton AG and Proton Mail.
For the VPN service, see Proton VPN.

Proton
DevelopersValve
CodeWeavers
Initial release21 August 2018 (21 August 2018)
Stable release
10.0-4  / 27 January 2026 (27 January 2026)
Operating systemLinux
Available inEnglish
TypeCompatibility layer
License
RepositoryProton on GitHub

Proton is a compatibility layer that allows Windows software (primarily video games) to run on Linux-based operating systems. Proton is developed by Valve in cooperation with developers from CodeWeavers. It is a collection of software and libraries combined with a patched version of Wine to improve performance and compatibility with Windows games. Proton is designed for integration into the Steam client as "Steam Play". It is officially distributed through the client, although third-party forks can be manually installed.

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