Top 20 NuGet openid Packages

Class library to simplify application token retrieval from Microsoft OAuth 2.0 workflow.
Veracity authentication library for applications based on ASP.NET Framework
MembershipReboot support for IdentityServer3
ASP.NET Identity support for IdentityServer3 repackaged as a dll client library, preventing the addition of volatile source code to the destination project
Entity Framework Core persistence layer for IdentityServer4
This package contains the runtime assemblies for ASP.NET Web Pages. ASP.NET Web Pages and the new Razor syntax provide a fast, terse, clean and lightweight way to combine server code with HTML to create dynamic web content.
Components enabling secure authentication and authorization based on popular standards such as OAuth, OpenId, OTP, SSH, RADIUS, Kerberos, and LDAP through simple, easy-to-use, and intuitive APIs.
MongoDB persistence layer for IdentityServer4
.NET and Xamarin libraries for authentication through the AeroGear mobile services
Plugin for adding WS-Federation Identity Provider capabilities to IdentityServer3
This package adds support for integrated Windows authentication to IdentityServer.
SimpleAuthentication is a ASP.NET library that makes it really simple to for developers to add Social Authentication code to an ASP.NET application.
OWIN middleware for validating OAuth2 and OpenID Connect scope claims.
Adds OpenId Auth Providers for use in StackExpress Web and REST Services. Includes built-in support for Google, Yahoo, MyOpenId and Custom OpenId providers. More Info on Auth Providers: https://github.com/ServiceStack/ServiceStack/wiki/Authentication-and-authorizat...
.NET and Xamarin libraries for the AeroGear Mobile Core
.NET and Xamarin libraries for authentication through the AeroGear mobile services
.NET and Xamarin libraries for the AeroGear Mobile Core
.NET and Xamarin libraries for the AeroGear Mobile Core
Adds additional OAuth providers for OWIN to use with ASP.NET
Entity Framework Persistence Layer for the IdentityServer3 WS-Federation Plugin