"The Mono project started in 2001 as an effort to implement the .NET Framework to Unix. To bring both the new programming model based on the Common Language Infrastructure and C# as well as helping people migrate their existing knowledge and applications to Unix. Mono today supports a wide variety of operating systems, CPUs and a large chunk of the functionality available in the .NET Framework."

You'll find the complete roadmap here: http://www.go-mono.com/mono-roadmap.html

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