Cosmos is a set of operating system legos written completely in C# that allow developers to easily build custom OSes with little OS experience by simply selecting new project in Visual Studio, then pressing F5 to build, deploy, and debug.

Cosmos is an independent project from Microsoft. I’m a former Microsoft FTE (full-time employee) myself and still heavily involved with Microsoft as I am Microsoft Regional Director, but Cosmos is independent. Cosmos is licensed under the BSD license though, so generally there are no issues….We are free to support anything we want.

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