OpenTK examples
OpenTK 4.x, .NET 5.0 (windows)
Hello Triangle
Hello Triangle - Windows Forms
2D Geometry
Texture
Text
Line
Line - See also Thick lines with OpenGL core profile and Drawing a line in modern OpenGL
3D Geometry
Compute shader
Compute shader - Barnsley fern
Navigation
Parallax mapping
WPF Generalized_displacement_mapping