Top 20 NuGet oauth2 Packages

OpenID Connect & OAuth 2.0 client library
OpenID Connect and OAuth 2.0 Framework for ASP.NET Core
ASP.NET Core authentication handler to validate JWT and reference tokens from IdentityServer4
ASP.NET Core 2.0 Middleware for validating tokens using OAuth 2.0 introspection
IdentityServer is a framework and a hostable component that allows implementing single sign-on and access control for modern web applications and APIs using protocols like OpenID Connect and OAuth2. It supports a wide range of clients like mobile, web, SPAs and desktop applications and is extensible...
ASP.NET Core Identity Integration for IdentityServer4
EntityFramework persistence layer for IdentityServer4
Auth0 .NET SDK
Auth0 .NET SDK
Auth0 .NET SDK
Package Description
Chilkat .NET Class Library (64-bit) for SSH/SFTP, FTP, POP3, SMTP, IMAP, SSL/TLS, Zip, REST, OAuth2, HTTP, RSA, XML DSig, Encryption, Compression, XML, Socket, XMP, HTML to XML, JSON, JWT, OAuth1, conversion, PKCS12/PFX, Java Keystore, ASN.1, PEM, ECC, Async, ...
Package Description
ASP.NET Identity support for IdentityServer3
Access token validation middleware for JWT and reference tokens issued by IdentityServer3.
ASP.NET Core External Security Provider for CloudFoundry
ASP.NET Core Middleware for validating scope claims
.NetStandard library for accessing easily Azure AD/B2C secured API's via Oauth2 and getting information via the Graph Api
Helper library for identity & access control in .NET 4.0/WIF and .NET 4.5 (includes MVC4 and Web API support).
Chilkat .NET Core Class Library