Top 20 NuGet MVC Packages

The Grid control from mvccontrib.codeplex.com updated for ASP.NET MVC5 / .NET 4.5 and without dependencies.
Better MVC support for Sitecore CMS
This is a starter kit for creating a Style Guide for your MVC application. This kit was created as a code sample for the article On Creating a Live Style Guide for MVC Application Development (Simple-Talk.com).
Change RequireJS.NET to use default.js in controller folder
Business rules and authorization extensions for Breeze Server for Entity Framework 6
HtmlHelper for using jQuery.GoogleMaps plugin on ASP.NET MVC pages
ComboxJS is a widget for gluing together several controls.
ActionMailerNext is a painless way of using razor view to render emails. This version runs with ASP.MVC 4. ActionMailerNext is a continuation of the ActionMailer.Net project
ActionMailer integration with the Postmark mail sending service.
The ASP.NET integration for HtmlToJavaScript. Provides a handler to transform *.js.html from Html to JavaScript on the fly.
ActionMailerNext is a painless way of using razor view to render emails. This version runs with ASP.MVC 3. ActionMailerNext is a continuation of the ActionMailer.Net project.
JavaScript knockoutjs SPA(Single Page Application) navigation router. With typescript support.
Generic admin panel for ASP.NET MVC. You should intall Ilaro.Admin.Unity or Ilaro.Admin.Ninject, depending on which DI you use.
Simple JavaScript logging library.
It is very light weight Dependency Resolver based on patterns & practices - Unity. It can resolve both MVC Controller and WebApi Controller.
A library of core helpers, extensions, constants, enums and other useful things for .NET Web projects.
Datalist core dll without content files.
Simple and flexible fluent validation framework for .NET for ASP.NET MVC applications
Card is a JavaScript library that will take any credit card form and make it the best part of the checkout process (without you changing anything). Everything is created with pure CSS, HTML, and Javascript — no images required.