Ory

Ory provides our identity and authorization stack as open-source, self-hostable services: Kratos for identity and user management, Hydra for OAuth 2.0 and OpenID Connect, Keto for fine-grained permissions modeled on Google’s Zanzibar, and Oathkeeper as an identity and access proxy. Each component is API-first and can be adopted on its own, and running them ourselves keeps user identities in our datacenter rather than with a SaaS identity provider.