Ory Hydra
Identity & SSOCertified OAuth 2.0 and OpenID Connect server
Replaces Okta, Auth0
5 self-hosted projects maintained by ory on GitHub — combined community: 42,815 GitHub stars.
Everything ory ships here sits in one category, identity & sso, so these projects are best read as alternatives or companions to each other. Ory Hydra is the flagship at 17,607 stars — Certified OAuth 2.0 and OpenID Connect server. 4 of 5 are written primarily in Go. The oldest dates from 2015 and the newest from 2022. 5 publish a Docker deployment path.
| Projects | 5 |
|---|---|
| Combined stars | 42,815 |
| Hosted on | GitHub |
| Languages | Go (4), TypeScript (1) |
| Licenses | Apache-2.0 (5) |
| Setup difficulty | Medium (3), Hard (2) |
| Min. RAM range | 256–512 MB |
| First releases | 2015–2022 |
Certified OAuth 2.0 and OpenID Connect server
Replaces Okta, Auth0
Headless identity and user management API server
Replaces Auth0, Firebase Auth
Permission and authorization server based on Zanzibar
Replaces Auth0 FGA, OpenFGA
Identity and access proxy for zero-trust networks
Replaces Cloudflare Access
SAML and OIDC SSO service bridging enterprise providers
Replaces Auth0, WorkOS