Open-source OAuth2 & OpenID server Ory Hydra v2
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. -
Open-source OAuth2 & OpenID server Ory Hydra v2 launched on November 3, 2022 with 108 votes, #384 of 3,471 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 3 years on.
In plain words
Ory Hydra v2 is an open-source OAuth2 and OpenID Connect server for developers building authentication systems. It handles user login, consent flows, and token management across applications. The software is designed for teams that need a self-hosted identity provider rather than relying on third-party services. Built for flexibility and control, it allows developers to customize authentication processes while maintaining industry standards for security and interoperability.
written from the facts on this page · September 2026
From the sources
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. - Release v2.0.0 · ory/hydra
Ory Hydra 2.0 is available now! It ships major internal data restructuring and adds support for additional OAuth2 flows such as OAuth2 Token Exchange. Ory Hydra now natively integrates with Ory Kratos , an open source Identity Server. Install the Ory CLI for the best developer experience to try out Ory Hydra 2.0 right away! Create an OAuth 2.0 Client, and run the OAuth 2.0 Client Credentialsfrom github.com
Does a similar job
all alternatives →- HOHydra – Open-Source OAuth2 Server2019 · gethydra.sh · ▲190
Ory Hydra is the open-source, OpenID Certified® OAuth 2.0 server and OpenID Connect provider. Cloud-native, API-first, and built for scale.
Run your own OAuth2/OpenID Connect provider2016 · github.com · ▲161Internet-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. -
Run your own OAuth2 and OpenID Connect Provider2016 · github.com · ▲88Internet-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. -
Graceful token refresh for open source OAuth2 Server Ory Hydra2025 · github.com · ▲7Internet-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. -
Ory Kratos – Open-source identity server written in Go2022 · github.com · ▲290Headless cloud-native authentication and identity management written in Go. Scales to a billion+ users. Replace Homegrown, Auth0, Okta, Firebase with better UX and DX. Passkeys, Social Sign In, OIDC, Magic Link, Multi-Factor Auth, SMS, SAML, TOTP, and more. Runs everywhere, runs best on Ory Network.
Open-source API Key server written in Go by OryJun 2026 · github.com · ▲35Web-scale and security-hardened API key server for users, services, machine to machine, and AI agents. Token derivation brings fine-grained capability tokens to avoid common API key pitfalls. Apache2 open source for indie deployments, commercial for scalable and HA. - ory/talos
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