Top 20 NuGet authentication Packages

Authentication for Tinyweb with a simple Fluent syntax.... What the hell did you expect?
A simple recipe for adding forms based membership persistence to a FubuMVC application
Compose your views through conventional and type-safe extensions.
Extensible authentication behaviors (with sensible defaults) for your FubuMVC application.
Adds windows authentication to a FubuMVC application.
A DotNetOpenAuth client for logging in to Facebook using OAuth2.
A DotNetOpenAuth client for logging in to Google using OAuth2.
Classes to be used with the ASP.Net Web API stack.
An endpoint implementation for the residence store protocol, as a standard ASP.NET MVC Controller.
This is a Glimpse plugin which helps developers see what magic happens 'under the hood' for SimpleAuthentication.
Used with SimpleAuthentication, this adds additional provider support: 1. GitHub 2. Amazon 3. 37 Signals 4. LinkedIn 5. OpenId.
Provides a simple implementation of the HTTP Token Access Authentication scheme for use with ASP.NET Web API by leveraging the ASP.NET Form Authentication engine.
Core library for FormsToTokenAccessAuthentication.
Reusable LoginScreenFixture for projects that use FubuMVC.Authentication
Adds Saml2 support to a FubuMVC application
Storyteller2/Serenity helpers for testing FubuMVC.Saml2 on your project
Recursos en español para MvcAccount
Suomen resurssit MvcAccount
Recursos em português do MvcAccount
Used with SimpleAuthentication, provides automated configuration for ASP.NET Mvc projects.