We are using Ory Hydra now (but not any of the other components like Kratos, Oathkeeper, etc) and no real complaints so far. It is important to understand thoug

We are using Ory Hydra now (but not any of the other components like Kratos, Oathkeeper, etc) and no real complaints so far. It is important to understand though the Hydra is just a component and not an out-of-the-box solution. You still have to implement your own user interface is you plan on doing OIDC login (and not just client_credentials for service authentication). Basically Hydra just takes a self-hosted login/registration/etc UI which you build yourself and wraps it in an OIDC provider. Which is great if you need to build an OIDC provider and want tight control over the user experience and user management (our use case) but don't want to implement all the fussy details of the OAuth2 protocol.