Proton GE is described as 'Compatibility tool for running Windows games on Linux, featuring media foundation patches, FSR support, 'protonfixes' automation, Nvidia CUDA, and raw input' and is a compatibility layer tool in the gaming software category. There are more than 25 alternatives to Proton GE for a variety of platforms, including Linux, Mac, Flathub, Wine and Windows apps. The best Proton GE alternative is Wine, which is both free and Open Source. Other great apps like Proton GE are Proton, ReactOS, Bottles and PlayOnLinux - PlayOnMac.