Open source .Net operating system: Cosmos

Cosmos is an operating system that is done entirely in C#.Microsoft has a similar research project called Singularity, Singularity is not made publicly available (I thought the project was dead but the project website states version 1 is completed and is available for a small number of universities).Although an OS written in pure C# is cool, I am awaiting to see the real word examples to solve real world situations.