Top 20 NuGet ASP.NET Packages

Provides a test harness for WebSocket testing in Nancy applications.
A simple HAL formatter for ASP.NET Web API.
FluentDataAnnotations.Mvc is a library that provides fluent API for adding DataAnnotaions for ASP.NET MVC projects
Enables implementing themes for ASP.NET MVC
Marvin.HttpCache is a complete implementation of the RFC2616 Http Caching standard for use with HttpClient, for all .NET Framework platforms (Windows Store, Windows Phone, WPF, WinForms, Console apps). Make sure to check the project site for the current status and to learn how to get started.
A toolkit for everyday web development
A library of core helpers, extensions, constants, enums and other useful things for Sitecore CMS projects.
Common editor templates for ASP.Net MVC applications -- Nullable<DateTime>.
Common display templates for ASP.Net MVC applications -- Nullable<DateTime>.
Package provides functionality to prerender pages of your single page application, based on OWIN. Uses prerender.io (PhantomJS) service.
NuGet API wrappers simplifying nuget package management in websites at runtime
Extendable wrappers and abstractions over web servers (IIS, IISExpress or custom)
A library of core helpers, extensions, constants, enums and other useful things for all ASP.NET MVC projects.
A set of common use extensions, filters and helpers for asp.net MVC
This package helps auto-restart a asp.net application hosted in iis after a shutdown. Just in 2 steps: adding a library and setting a couple of config settings. Configuration info on project's url
An IIdentityMessageService implemention using the mailgun_csharp API wrapper
Hyprlinkr route dispatching based on Drum
Owin middleware to make your webpages look cuter. This might dramatically increase the traffic and pageviews on your website.
dapper for asp.net identity
Common nuget package required for TrackerEnabledDbContext & TrackerEnabledDbContext.Identity