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ory/hydra
What is Ory Hydra?
OpenID Certified OAuth 2.1 and OpenID Connect provider server. It has 17,645 stars on GitHub and ranks #63 in Security & Privacy. You can host it on your own server and keep your data.
GitHub description: Internet-scale OpenID Certified™ OpenID Connect and OAuth2.1 provider that integrates with your user management through headless APIs. Solve OIDC/OAuth2 user cases over night. Consume as a service on Ory Network or self-host. Trusted by OpenAI and many others for scale and security. Written in Go.
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