Honestly, just write the front-end in Visual Studio/C# and that should be native. Or write it in Win32 api, in C. For GNU/Linux, write it in GTK or QT, as app

Honestly, just write the front-end in Visual Studio/C# and that should be native. Or write it in Win32 api, in C. For GNU/Linux, write it in GTK or QT, as appropriate.