It has just been announced that ASP.NET MVC has been released under Microsoft’s open source license. The Microsoft Public License is certified by the Open Source Initiative, making is appropriate for most projects requiring an open source license including Novell’s Mono.
Currently we don’t have any explanation for why Microsoft has decided to use this route, but we do have confirmation from Scott Guthrie that there are no platform restrictions of any kind associated with the code. Presumably one could even go so far as to port it to other platforms such as Java or Ruby, though with Spring and Ruby on Rails there would be no need.
The ASP.NET MVC source code is available from the Microsoft Download Center.