ASP.NET MVC Extensions
There is another ASP.NET MVC extension project ASP.NET MVC Extensions (previously known as System.Web.Extensibility)
It was developed siince Decemper 2009 and today celebrates it's v1.0 RTM release
" ASP.NET MVC Extensions (aka System.Web.Mvc.Extensibility) is developed on top of ASP.NET MVC extensibility point, which allows your IoC Container to rule everywhere."
project is hosted at Codeplex http://mvcextensions.codeplex.com/