We have released Silver Diagram Beta + SDK, you can try it out here, and read more information about it here.
About Silver Diagram: Create your custom diagram based application with Silver Diagram. Make a mind map application, create flow charts for your custom projects or develop other solutions.
The Silver Diagram SDK is available for Silverlight and Windows Phone 7 and has the following features:
- Define custom nodes as simple controls and use editors and adorners to manipulate them.
- Arrange nodes by xaml or code and link them by connections.
- Add functionality for drag and drop for your applications and support undo and redo.
- Load diagrams from xml files and save them as well.
- Export your results as image using ImageTools for Silverlight.