Open Source Auth Servers
- https://github.com/keycloak/keycloak (Most Popular)
- https://github.com/stack-auth/stack-auth
- https://github.com/teamhanko/hanko
- https://tesseral.com/docs/what-is-tesseral
- https://github.com/ory/kratos
- https://github.com/zitadel/zitadel
- https://github.com/casbin/casbin
- https://github.com/goauthentik/authentik
- https://logto.io