OpenID Connect Provider and OAuth 2.0 Authorization Server Framework based on Katana.
IdentityServer 3 (IdSrv3) is a .NET/Katana-based framework and 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 to allow integration in new and existing architectures.