GoForms 

System.Drawing.Common type-forwarding facade of NetForms: code and resources that name System.Drawing.Common bind to NetForms.Drawing.

Moves a Windows Forms project to NetForms so it builds and runs on Linux: reports what carries over, then rewrites the .csproj (UseWindowsForms to the NetForms package, net8.0-windows to net10.0).

Avalonia 12 implementation of the NetForms platform layer: one Avalonia Window per Form, one custom-drawn control, Skia lease for painting.

System.Drawing (Graphics, Font, Pen, Brush, Bitmap) implemented on SkiaSharp.

Platform abstraction for NetForms: window, input, clipboard, native dialogs. No UI toolkit types leak through.

Project and item templates for NetForms, WinForms for Windows and Linux.

System.Windows.Forms, cross-platform: own Control tree, own painting via SkiaSharp, Avalonia as the platform layer.