Top 20 NuGet auth Packages

gRPC C# Authentication Library
Firebase authentication library. It can generate Firebase auth token based on given OAuth token (issued by Google, Facebook...). This Firebase token can then be used with REST queries against Firebase endpoints.
Adds OpenId Auth Providers for use in ServiceStack Web and REST Services. Includes built-in support for Google, Yahoo, MyOpenId and Custom OpenId providers. More Info on Auth Providers: https://docs.servicestack.net/authentication-and-authorization
Adds .NET Framework OAuth2 Providers for use in ServiceStack Web and REST Services. Includes built-in support for Google and LinkedIn OAuth2 providers. More Info on Auth Providers: https://docs.servicestack.net/authentication-and-authorization
Provides various authenticators for user authentication in Crosslight apps, including HttpBasic, NTLM, OAuth, OAuth2, and WebAPI authenticator.
SharePoint .Net auth with Node.js
An ASP.NET Core authentication middleware: WeixinAuth for https://mp.weixin.qq.com (微信公众平台/网页授权登录) 使用说明:须微信公众平台(mp.weixin.qq.com)已认证的服务号(或测试号),用户在微信客户端访问网站时自动登入网站。
API Key authentication middleware for ASP.NET Core.
Firebase authentication library. It can generate Firebase auth token based on given OAuth token (issued by Google, Facebook...). This Firebase token can then be used with REST queries against Firebase endpoints.
Google ReCaptcha wrapper class for quick and easy validation (injectable service for ASP.NET Core apps).
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).
A simple library for doing social authentication in .NET Core MVC. It authenticates that people are who they say they are, but does not authorise them and has no opinion on how you store details about your users. Includes login providers for GitHub, Google, Facebook and Twitter. See the project si...
A Xamarin wrapper around Xaamrin.Auth APIs to share in Social Media(Facebook & Twitter for now)
An ASP.NET Core authentication middleware: WeixinAuth for https://mp.weixin.qq.com (微信公众号/微信网页授权登录)
CaveSystems Auth Bibliothek.
Trimble Identity OpenId Connect Client helps you authenticate users via Trimble Identity and store user tokens. The library is cross-platform, so once you learn it on iOS, you're all set on Android.
Xamarin.iOS.WeChat with payment
Simple Authentication implementation for ASP.NET Core. Basic Authentication Scheme and API Key Custom Authentication Scheme.
MyShows OAuth-authenticator