Miguel de Icaza

Open-source .NET and cross-platform apps. De Icaza, from Mexico City, co-founded the GNOME desktop project in 1997 and then led Mono, an open-source version of Microsoft's .NET platform. In 2011 he and Nat Friedman founded Xamarin, which let developers write iPhone and Android apps in C# and share most of the code. Microsoft, once the target of open-source suspicion, bought Xamarin in 2016.