WPF Diagram | Build Interactive Diagrams | Syncfusion
https://www.syncfusion.com/wpf-ui-controls/diagram
WPF Diagrams – Mindscape
http://www.mindscapehq.com/products/wpfdiagrams
Diagrams Control – Telerik UI for WPF Components – Telerik
https://www.telerik.com/products/wpf/diagrams.aspx