VisiFire - Open Source Silverlight Charts
Visifire is a set of open source data visualization components - powered by Microsoft® Silverlight™. With Visifire you can create and embed visually stunning animated Silverlight Charts within minutes. Visifire is easy to use and independent of the server side technology. It can be used with ASP, ASP.Net, PHP, JSP, ColdFusion, Ruby on Rails or just simple HTML. Don't take our word for it! Visit Visifire Gallery or design your own chart using Chart Designer.
See Silverlight Charts for more.