WPF (Win32)
    + UWP/WinRT [Extends WPF Syntax] (Win 8, 8.1, 10, XBOX One)
    + WinUI2 [Extends WPF Syntax]
      + Uno Platform (Android, iOS, MacOS, Linux, WASM)
      + UWP/WinRT (Win 10, 11, XBOX One)
    + WinUI3 [Extends WPF Syntax]
      + Uno Platform (Android, iOS, MacOS, Linux/GTK, Linux/Frame Buffer, Tizen, WPF, WASM)
      + Windows App SDK (Win 10, 11)
    + NoesisGUI [Extends WPF Syntax] (Unity 3D, other C# and C++ Based Platforms)
    + Avalonia [Similar to WPF Syntax, but not a true extension of it] (Android, iOS, MacOS, Win32, WASM)

Xamarin Forms [Proprietary Syntax] (Android, iOS, UWP/WinRT)
    + MAUI [Extends Xamarin Forms Syntax] (Android, iOS, MacOS, UWP/WinRT, Win App SDK, WASM)