Cosmos
"May the source be with you"
Cosmos (C# Open Source Managed Operating System) is a complete operating system built from the ground up in C#.Cosmos currently only runs on x86 and x64 processors, but we are investigating many other platforms, including ARM processors, Apple's iPhone, and the Nintendo Wii.
From this:

to this by pressing F5:

and with full debugging in Visual Studio:
Release Dates
In the past, we had some issues doing frequent releases. (1 year intervals, and larger) We hope to be able to do more frequent releases now.
If you still feel there are changes in the project which haven't been released yet, but you still want to use them, you can build the sources yourself, as described in
Building Dev Kit.
Wiki Resources
Getting Started
To prevent spambots from spamming our list we ask you introduce yourself to join. Please mention something specific to Cosmos. "Hey I want to join" won't get you in....
Join our IRC channel:
Join our Facebook page:
Code Project Articles
To Do List
Looking for something to do? Here is the Cosmos short list.
Other Cosmos Sites
Publicity
Related Projects and Resources
Note: These projects may be those of Cosmos users and may not be officially related with Cosmos.
CIL Resources
x86/x64 Resources
OS Development Resources
Google Summer of Code 2012