ASP.NET, Web API and ASP.NET Web Pages Open Sourced

More Open Source goodness from Microsoft today, with the announcement that we are open sourcing ASP.NET MVC 4, ASP.NET Web API, ASP.NET Web Pages v2 (Razor) - all with contributions - under the Apache 2.0 license.

You can find the source on CodePlex, and all the details on Scott Guthrie's blog.

“We will also for the first time allow developers outside of Microsoft to submit patches and code contributions that the Microsoft development team will review for potential inclusion in the products,” Guthrie says. “We announced a similar open development approach with the Windows Azure SDK last December, and have found it to be a great way to build an even tighter feedback loop with developers – and ultimately deliver even better products as a result.”

You can now browse, sync and build the source tree of ASP.NET MVC, Web API, and Razor here.

In short, as Principal Program Manager Scott Hanselman notes in his blog about all this goodness: Open Source = Increased Investment. ASP.NET is a part of .NET, it will still ship with Visual Studio. It's the same ASP.NET, managed by the same developers with the same support.

It is also very important to note, as Guthrie points out, that ASP.NET MVC, Web API and Razor will continue to be fully supported Microsoft products that ship both standalone as well as part of Visual Studio (the same as they do today).

“They will also continue to be staffed by the same Microsoft developers that build them today (in fact, we have more Microsoft developers working on the ASP.NET team now than ever before),” he says. “Our goal with today’s announcement is to increase the feedback loop on the products even more, and allow us to deliver even better products. We are really excited about the improvements this will bring.”