Hydra – Open-Source OAuth2 Server

In plain words

Hydra is an open-source OAuth2 server designed for developers who need to implement authentication and authorization in their applications. It provides OAuth2 and OpenID Connect capabilities, allowing developers to manage user access and permissions across multiple services. The server handles login flows, token management, and session control, making it suitable for building secure authentication systems in distributed environments.

written from the facts on this page · September 2026

From the sources

The cloud-native, OpenID Certified® OAuth 2.0 server. Issue access tokens, secure APIs, and federate identity across third-party apps — without writing protocol code yourself. Existing OAuth and OpenID Connect solutions lack flexibility and granular control, limiting adaptability to specific business needs. Ory Hydra — the open-source, OpenID Certified® OAuth 2.0 server — integrates with your infrastructure, giving you complete control over how access tokens are issued, scoped, and validated. Run Ory Hydra on your own infrastructure with commercial support, SLA-backed responses, and CVE patching from the team that builds it. Skip the operational overhead — get a production-ready, OpenID…from gethydra.sh

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  Open-source OAuth2 & OpenID server Ory Hydra v22022 · github.com · ▲108

  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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  Graceful token refresh for open source OAuth2 Server Ory Hydra2025 · github.com · ▲7

  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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  Run your own OAuth2/OpenID Connect provider2016 · github.com · ▲161

  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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  Run your own OAuth2 and OpenID Connect Provider2016 · github.com · ▲88

  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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