Ory Hydra

Ory Hydra is an OAuth 2.0 authorization server and OpenID Connect provider written in Go. It issues and manages tokens and runs the protocol flows, and it connects to a separate login and consent app. The README lists PostgreSQL, MySQL and CockroachDB among the supported databases, and describes installs on Linux, macOS, Windows, Docker and Kubernetes. Ory Corp maintains the project and also offers it as a managed service on the Ory Network.

Worth knowing

The Ory Enterprise License adds features that the open-source version does not have, along with security releases with service level agreements and support. It is distributed as a Docker image from a private registry that requires authentication, not as a public download. The open-source release line is calendar-versioned, so the current version is named by year and month rather than a major number.