https://www.dotnetzone.gr:443/cs/blogs/papadi/archive/2008/01/13/net-framework-3-5-namespace-poster.aspxMicrosoft published a very useful and cool poster with all namespaces of .NET Framework 3. Click one of the following to download the poster: Full XPS Split XPS PDF Tiled PDF The poster depicts nicely all namespaces of .NET Framework 3 and the versionelCommunityServer 2.1 SP3 (Build: 20423.1)