Some third-party Silverlight controls were collected during Research.
OpenSource Porject:
1. Siverlight ToolKit (OpenSource)
Http://www.codeplex.com/Silverlight
2. GOA ToolKit for Silverlight (OpentSource)
Http://www.netikatech.com/downloads
3. Silverlight Contrib (OpenSource)
Http://silverlightcontrib.codeplex.com/
4. Silverlight Extension (OpentSource)
Http://slextensions.net/
5. Silverlight FX (OpenSource)
Http://projects.nikhilk.net/SilverlightFX/
6. SilverLight BlackLight (OpenSource)
Http://blacklight.codeplex.com/Release/ProjectReleases.aspx
7. Visifire For Charts (OpenSource)
Http://www.visifire.com/
Third Party Controls:
1. ComponentOne
Http://www.componentone.com/SuperProducts/StudioSilverlight/Live+Examples/
2. Devexpress
Http://demos.devexpress.com/Silverlight/
3. Infragistics
Http://www.infragistics.com/dotnet/netadvantage/silverlight/line-of-business.aspx#Overview
4. Telerik
Http://www.telerik.com/products/silverlight.aspx
5. ComponentArt
Http://silverlight.componentart.com/
6. divelements
Http://www.divelements.co.uk/
Http://www.cnblogs.com/jv9/archive/2009/06/18/1506232.html