Top 20 NuGet oauth2 Packages

OAuth 2.0 authentication provider that wraps OpenIdConnect.Server up into an easier-to-use package.

Linq To DB persistence layer for IdentityServer4

Trimble Identity ASP.NET Core security middleware.

"Thinktecture IdentityServer v3 - Entity Framework" is an Entity Framework-based persistence layer for Thinktecture IdentityServer v3

Identity Server 4 Persistance Storage with AWS DynamoDB

EntityFramework persistence layer for IdentityServer4

Marten persistence layer for IdentityServer4 using PostgreSQL as a document store

Bit.IdentityServer

OWIN OAuth Provider for UAE Pass.

MongoDB persistence layer for IdentityServer4

Entity Framework layer for the administration of the IdentityServer4 and Asp.Net Core Identity with SqlServer support

Entity Framework layer for the administration of the IdentityServer4 and Asp.Net Core Identity with PostrgreSQL support

ASP.NET Core authentication handler to validate messages signed with an asymmetric authentication scheme

腾讯社区开放平台（http://opensns.qq.com/）.NET SDK！此SDK采用的开源协议New BSD 协议，所以你可以任意使用此SDK包库文件，包括你的商业程序。通过“QQ登录”，用户能使用QQ帐号一键登录接入网站，大大降低了用户注册、登录的门槛，借助庞大的QQ用户群，给第三方网站带来更多新用户。已登录用户还可以将在第三方网站发布、分享的信息即时同步到QQ空间，使网站内容通过好友关系得到进一步的传播，从而提升网站的访问量和用户数。

A DotNetOpenAuth client for logging in to Facebook using OAuth2.

A DotNetOpenAuth client for logging in to Google using OAuth2.

This is a Glimpse plugin which helps developers see what magic happens 'under the hood' for SimpleAuthentication.

Used with SimpleAuthentication, this adds additional provider support: 1. GitHub 2. Amazon 3. 37 Signals 4. LinkedIn 5. OpenId.