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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If you ever wondered on how to use Keto with NestJS I just wrote an article about that: <https://dev.to/nidomiro/using-ory-keto-to-secure-nestjs-backends-5gbg>
The best part is, that the lib I wrote, parses RelationTuples in string representation to be usable with the Ory Keto SDK.
It makes working with RelationTuples much more readable.