EasyDiagram.NET

EasyDiagram.net is an open-source diagramming component that you can use to build interactive, feature rich diagramming. EasyDiagram.net supports AJAX style events (OnNodeRepositioned, OnNodeDoubleClicked, etc) and utilizes a nifty trick to perform real-time line drawing with pure Javascript.
Category	Charting & Reporting
License	GNU General Public License (GPL)
HomePage	http://www.EasyDiagram.net