Is there any famous app that uses Keycloak as its authorization server?

[jangaraj]

Companies using keycloak

Hi This is not a technical question. More of marketing related question. I am suggesting keycloak to a client for identity management. They would like to know if there are any big companies using keycloak at a scale of millions of users, hundreds of thousands logins. Redhat supports keycloak. Does redhat also use it for their products? Are there any companies with huge user base using keycloak in production?