OpenRA

Thank you Steipnir. The project should change the Build instructions to reference that MSBuild is Free Software under the MIT license because it is referenced as propietary software (https://github.com/OpenHV/OpenHV/wiki/Build) and even their binary builds seem to be under the same license. I asked ...

Is it possible to build this project using Mono XBuild instead of the propietary MSBuild?

XBuild is supposed to be the replacement in Mono for MSBuild. However, I am not sure at all about possible differencies.