Software
- https://auth0.com/
- https://clerk.com/
- https://www.okta.com/
- https://kinde.com/
- https://www.keycloak.org/
- https://www.authelia.com/
- https://github.com/lldap/lldap
- https://www.openldap.org/
- https://freeipa.org/
- https://directory.apache.org/
- https://goauthentik.io/
- https://www.ory.sh/
- https://github.com/oauth2-proxy/oauth2-proxy