Top 20 NuGet authentication Packages

Includes Event Source based logging support.
OpenID Connect server middleware for OWIN/Katana.
ASP.NET Core middleware that enables an application to support the WsFederation authentication workflow. This package was built from the source code at https://github.com/dotnet/aspnetcore/tree/2670c128d522473e146ff9f8159bfffdfe694cd9
ASP.NET Core security middleware enabling GitHub authentication.
ASP.NET Core Azure Active Directory Integration provides components for easily integrating Azure Active Directory authentication within your ASP.NET Core application. This package was built from the source code at https://github.com/dotnet/aspnetcore/tree/2670c128d522473e146ff9f8159bfffdfe694cd9
Authentication library for the veracity services sdk for aspnetcore
This package enables UI for ASP.NET Core Web apps that use Microsoft.Identity.Web.
An NHibernate IUserAuthRepository to persist User registration and authentication info in any RDBMS NHibernate supports. Implements ServiceStack's built-in AuthProvider Model: https://docs.servicestack.net/authentication-and-authorization inc. Twitter, Facebook, Basic, Digest, Cred...
OAuth2 introspection middleware for OWIN/Katana.
The server module for a simple websocket server and client implementation with authentication.
The server module for a simple SSL or non-SSL Tcp Server with authentication.
OAuth2 introspection middleware for ASP.NET Core.
Google authentication handling across Xamarin.iOS and Xamarin.Android
ASP.NET Core common types used by the various authentication middleware components. This package was built from the source code at https://github.com/aspnet/Security/tree/93926543f8469614c2feb23de8a8c0561b8b2463
ASP.NET Core middleware that enables an application to support Facebook's OAuth 2.0 authentication workflow. This package was built from the source code at https://github.com/dotnet/aspnetcore/tree/2670c128d522473e146ff9f8159bfffdfe694cd9
ASP.NET Core contains middleware to support Google's OpenId and OAuth 2.0 authentication workflows. This package was built from the source code at https://github.com/dotnet/aspnetcore/tree/2670c128d522473e146ff9f8159bfffdfe694cd9
ASP.NET Core middleware that enables an application to support the Microsoft Account authentication workflow. This package was built from the source code at https://github.com/dotnet/aspnetcore/tree/2670c128d522473e146ff9f8159bfffdfe694cd9
ASP.NET Core middleware that enables an application to support Twitter's OAuth 1.0 authentication workflow. This package was built from the source code at https://github.com/dotnet/aspnetcore/tree/2670c128d522473e146ff9f8159bfffdfe694cd9
A port of Microsoft.IdentityModel.Extensions.dll packaged as a NuGet package by the SharePoint PnP team.
Yoti .NET SDK, providing Yoti API support for Login, Verify (2FA) and Age Verification