is .net ( or any part of it ) open source?

is any code related to .NET/ASP.NET or BCL open source? If so where can this be downloaded?

Solution

Microsoft's implementation of the CLR is not open source. However, a stripped down version of it, Rotor, is.

That said, Mono is probably better supported when compared with Rotor, so if you're looking for something to distribute I'd use Mono.

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