Keycloak - Open Source Identity and Access Management for modern Applications and Services.
IdentityServer - An open-source, standards-compliant, and flexible OpenID Connect and OAuth 2.x framework for ASP.NET Core
Shibboleth - standards based, open source software for web single sign-on across or within organizational...
Ory - Developer-first Access Management
DbProtect - Trustwave DbProtect is a highly scalable database security platform that helps organizations secure their relational databases and big data stores, both on premises and in the cloud.
openiddict - OpenIddict aims at providing a versatile solution to implement an OpenID Connect server and token validation in any ASP.NET Core