Top 20 NuGet auth Packages

ArpexId authentication client.
Memory repository for Simple token authentication library
Provides utiliy and common functionalities for Stems client applications
Wires an API project with Owin Authentication to add /Token, /RefreshTokens, /Auth/Register and /Auth/PasswordReset endpoints
Angular HTTP Auth (angular-http-auth) binding library for Bridge.NET projects.
SharePoint .Net auth with Node.js
Basic Auth (basic-auth) binding library for Bridge.NET projects.
Signed Xamarin Google Play Services - Auth Base assemblies for Intersoft Crosslight.
The official ASP.NET Identity Provider for Couchbase Server.
MongoDB data store adaptor for ASP.NET Core Identity
Easily support authentication in your app using passwords, or popular federated identity providers like Google, Facebook, and more.
gRPC library compatible with .NET Core. Currently, the Grpc.Auth NuGet package doesn't support .NET Core. This package supplies a version which runs on .NET Core that is experimental and in-development.
Renderer para login com facebook, utilizando xamarin auth
Socketio JWT Auth (socketio-jwt-auth) binding library for Bridge.NET projects.
Redux Auth Wrapper (redux-auth-wrapper) binding library for Bridge.NET projects.
Middleware to connect ats suite
A useful service class that provides functionality for generating and validating JWTs.
devonfw4NET Application user classes to implement basic Microsoft's basic authentication in order to be used on authentication methodologies such Jason Web Token (JWT).