1、ArcGIS API for Microsoft Silverlight 3.0
地址：http://www.esri.com/apps/products/download/index.cfm?fuseaction=download.main&downloadid=714
ArcGIS Extensibility SDK for Silverlight 3.0
地址：http://www.esri.com/apps/products/download/index.cfm?fuseaction=download.main&downloadid=836
ArcGIS Viewer for Silverlight 3.0 (32-Bit) - English
地址：http://www.esri.com/apps/products/download/index.cfm?fuseaction=download.main&downloadid=835
ArcGIS Viewer for Silverlight 3.0 (64-bit) - English
地址：http://www.esri.com/apps/products/download/index.cfm?fuseaction=download.main&downloadid=834
2、Microsoft Expression Blend Preview for Silverlight 5
地址：http://www.microsoft.com/en-us/download/details.aspx?id=9503
Microsoft Silverlight 5 Tools for Visual Studio 2010 SP1
地址：http://www.microsoft.com/zh-cn/download/details.aspx?id=28358
Microsoft Silverlight 5 SDK
地址：http://www.microsoft.com/zh-cn/download/details.aspx?id=28359
Microsoft Silverlight Toolkit