Top 20 NuGet MVC Packages

Some extensions for ASP.Net MVC3 which allow you to persist the state of your model between different Views without using the Session object.
Part of AV.Web framework. Database layer through repositary pattern
Adds HTML5 Editor Templates (to use new input types) with HTML.EditorFor functions, and support additional html attributes (such as data-bind for knockout)
Classes to help with creating an ASP.NET MVC3 application.
Classes to help integrate OAuth in an ASP.NET MVC3 application.
Classes to help testing ASP.NET MVC3 applications.
Create view models for Mvc3 by placing attributes on your existing domain models.