[Discover] SharpOS in the stream of C sharp (C#) kernels | obsethryl's lab http://lab.obsethryl.eu/content/sharpos-stream-c-sharp-c-kernels
(os kernel .net compiler) 
[Discover] KHB: Synthesis: An Efficient Implementation of Fundamental Operating Systems Services [LWN.net] http://lwn.net/Articles/270081/ (lockfree os algorithms design)
[Discover] Singularity - C# OS Released on CodePlex - Matthew Podwysocki's Blog http://weblogs.asp.net/podwysocki/archive/2008/03/11/singularity-c-os-released-on-codeplex.aspx (.net os clr research)
[Discover] Cosmos, one of the Opensource CSharp (C#) Based Kernels | obsethryl's lab http://lab.obsethryl.eu/content/cosmos-one-opensource-csharp-c-based-kernels (.net os assembly development)
[Discover] Embedded.com - Choosing the best system software architecture for your wireless smart sensor design: http://www.embedded.com/design/networking/204800543 (sensor os embedded wireless)
[Discover] ReactOS Homepage - Frontpage http://www.reactos.org/ (windows os clone implementation)
[Discover] KHB: Synthesis: An Efficient Implementation of Fundamental Operating Systems Services [LWN.net] http://lwn.net/Articles/270081/ (lockfree os algorithms design)
[Discover] Singularity - C# OS Released on CodePlex - Matthew Podwysocki's Blog http://weblogs.asp.net/podwysocki/archive/2008/03/11/singularity-c-os-released-on-codeplex.aspx (.net os clr research)
[Discover] Cosmos, one of the Opensource CSharp (C#) Based Kernels | obsethryl's lab http://lab.obsethryl.eu/content/cosmos-one-opensource-csharp-c-based-kernels (.net os assembly development)
[Discover] Embedded.com - Choosing the best system software architecture for your wireless smart sensor design: http://www.embedded.com/design/networking/204800543 (sensor os embedded wireless)
[Discover] ReactOS Homepage - Frontpage http://www.reactos.org/ (windows os clone implementation)