Ory is the largest open source community in the world for cloud software application security. We maintain advanced open source security software solving authentication, authorization, access control, application network security, and delegation. Ory implements a variety of industry and best-practice standards including OAuth 2.0 / OAuth 2.1, OpenID Connect, Zero Trust Networking, Google Zanzibar Policy Framework, FIDO2 U2F, WebAuthn, TOTP, and more.

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Followup: so if Kratos is user management and logins, and Hydra is an OAuth2 implementation, would it make sense for the Hydra docs here to mention Kratos as a headless user management option, somewhere in between a library and a full user management system like Okta?