Keycloak
96 · HealthyIdentity and access management server with SSO, OIDC, SAML and user federation (CNCF).
Directory / Alternatives to Okta
Open source alternatives to Okta
4 open source projects replace Okta, ranked by how safe each is to depend on.
authentik
88 · HealthyIdentity provider with flows, SSO across OIDC, SAML, LDAP and a proxy outpost.
ZITADEL
84 · HealthyMulti-tenant identity platform with event-sourced audit trail and B2B organizations.
Authelia
71 · StableSingle sign-on and two-factor portal that sits in front of web apps via a reverse proxy.
At a glance
Health and license are separate verdicts: a project can be well maintained and still not be open source.
| Project | Health | License | Stars |
|---|---|---|---|
| Keycloak | 96 · Healthy | Apache-2.0 | 37k |
| authentik | 88 · Healthy | Open source (permissive) | 26k |
| ZITADEL | 84 · Healthy | AGPL-3.0Relicensed 2025 | 15k |
| Authelia | 71 · Stable | Apache-2.0 | 29k |
More in Auth & identity
Okta is a paid auth & identity product. See all open source auth & identity tools, ranked the same way.
Scores refresh nightly from GitHub. How we score.