GirCore provides C# bindings for different GObject based libraries like GTK4, Adwaita, WebKitGTK, GStreamer and more. It allows to write native dotnet linux apps which integrating deeply into the system. The applications page lists some projects that already use GirCore.
Displaying a native GTK4 window is straightforward. Just create a new C# project, add the GirCore.Gtk-4.0 nuget package copy the following code into your Program.cs file and run the project.
There are other samples for a lot of GirCore nuget packages available.
If you want to contribute to GirCore please check out the github project or visit us on matrix.