OpenSimulator [1] runs on .NET and Mono (for Linux and Mac). That reminds me, the annual OpenSimulator Community Conference is this weekend [2]. It's a very m

OpenSimulator [1] runs on .NET and Mono (for Linux and Mac). That reminds me, the annual OpenSimulator Community Conference is this weekend [2]. It's a very mature project now, has been around more than a decade. I guess if it were started today, it would use .NET Core. [1] http://opensimulator.org/wiki/Main_Page http://opensimulator.org/wiki/Main_Page [2] https://conference.opensimulator.org/2018/ https://conference.opensimulator.org/2018/