http://blogs.mconstantin.eu.org/cchrism/archive/2004/11/02/172.aspxYag has compiled a list of products created by Microsoft that are developed either entirely, or just some features, with .NET code. As we can see the list contains some interesting products like UDDI server or Sharepoint Portal Server (from Windows 2003),en-USCommunityServer 2.0 (Build: 60404.2676)