I just came back from the Microsoft MVP Summit 2013. I was surprised and excited to learn there are a large number of open source projects from both inside and outside of Microsoft. There is also a strong support for open source frameworks in Visual Studio. I am glad to see that the Microsoft ASP.NET team has done a great job supporting open source and the community is going strong.
Open source projects from the ASP.NET team
Those who interested in the open source projects from the ASP.NET team should first visit http://aspnet.codeplex.com/. This site is a portal to many ASP.NET features that Microsoft has opened the source code.
Next, readers should visit http://aspnetwebstack.codeplex.com/. This site is the home of the latest source code of MVC, Web API and Web Pages.
The following are several open source projects that have been incorporated into Visual Studio:
The following projects are considered experimental:
Projects from outside of Microsoft
If you think there are no needs for another framework since ASP.NET MVC is already great, you would be surprised to find out some open source alternatives have actually attracted many followers:
Open Source Client-Side MVC or MVVM frameworks supported by Microsoft Visual Studio
Don’t forget to install Mads’ Web Essentials extension for Visual Studio 2012. You will be pleasantly surprised by the number of features that this extension adds to Visual Studio 2012.
I gathered these links for myself and others. If I missed any links, please post a comment or send me a note. I will be glad to update this page.