Three decades of experience talking here: If you don't see a vendor like Microsoft using a GUI framework for at least 50% of their new applications, then you've made a terrible mistake in adopting it yourself. Microsoft uses Google's framework for their own applications: Electron. Yes, you heard me right. Microsoft, a nearly 3 trillion dollar company, uses the framework of a competitor for their own desktop applicati…
Not as simple with Preview versions on Windows. I don't think they use Electron whatsoever anymore, and old versions weren't fully Electron either (I remember seeing Chakra [their old JS engine] in the stacktraces, doing some elementary logic), I think it's XAML with UWP + WebView2.