github.com/reactiveui/ReactiveUI (go): An advanced, composable, functional reactive model-view-viewmodel framework for all .NET platforms that is inspired by functional reactive programming. ReactiveUI allows you to  abstract mutable state away from your user interfaces, express the idea around a feature in one readable place and improve the testability of your application.
Keywords: android|csharp|dotnet|first-timers|fody|framework|functional-reactive-programming|hacktoberfest|ios|mvvm|reactive-extensions|reactive-programming|reactiveui|reactivex|tizen|uwp|winforms|wpf|xamarin|xamarin-forms