GoXam provides controls for implementing diagrams in WPF and Silverlight applications. GoXam was designed and built from scratch, so it takes full advantage of all the features of WPF and XAML.
GoDiagram provides diagramming components for .NET WinForms, and has been designed to take advantage of Microsoft .NET. GoDiagram includes support for automatic layout and Instruments (meters, dials, rulers or gauges).
The JGo package, com.nwoods.jgo, is a set of classes built using Java2D and Swing. It is no longer in active development.