Cosmos -- an open source operating system written in C#
After Singularity and SharpOS there is another project to build an OS in C#. Cosmos is an operating system that intended to be implemented in CIL compliant languages. Currently it is implemented exclusively in C#. The used IDE is Visual Studio 2008 which is -- without being ironic -- in fact the best IDE for C# resp. .NET development. An interview with Scott Balmos, the core developer of Cosmos, conveys a comprehensive overview about the Cosmos OS project.