Proton
Proton is a compatibility layer developed by Valve that allows Windows games and applications to run on Linux-based operating systems, such as SteamOS and other distributions. It is built on top of Wine, a free and open-source compatibility layer, and incorporates additional enhancements like DirectX translation through DXVK and VKD3D-Proton for improved performance and compatibility. Proton is integrated into the Steam client for Linux, enabling seamless gaming without manual configuration for many titles.
Developers should learn about Proton when working on cross-platform game development or supporting Linux gaming ecosystems, as it simplifies porting Windows games to Linux without full native ports. It is particularly useful for indie developers and studios aiming to reach Linux audiences cost-effectively, and for system administrators or enthusiasts optimizing Linux gaming setups. Proton also serves as a tool for testing game compatibility and performance on Linux during development cycles.