http://interactiveasp.net/blogs/natesstuff/archive/2008/11/17/singularity-2-0-rdk-now-available.aspxSingularity is a Managed operating system started by Microsoft Research. It's last version 1.1 target the .NET 1.1 framework and was a very fast OS (if not all that functional). The latest version supports the 2.0 framework, 64-bit processing, additionsenCommunityServer 2008 (Build: 30417.1769)