Keycloak
Keycloak is an open source identity and access management server and a CNCF incubating project, supporting OpenID Connect, OAuth 2.0, SAML 2.0, identity brokering and LDAP or Active Directory federation.
How Claude rates Keycloak.
Each score below is the model's own, on the rubric it wrote for that list, from what it already knows about Keycloak. Nothing here is edited by us.
The best auth providers for SaaS
#4 this week, scoring 7.9 out of 10. Best for Enterprises and organizations requiring self-hosted, standards-compliant identity management with full control and no vendor lock-in.
- Developer Experience 6
- Functional but dated admin UI, adequate documentation, and steeper learning curve compared to modern SaaS options.
- Feature Completeness 9
- Extremely comprehensive with enterprise SSO, SAML, LDAP, fine-grained permissions, and virtually every auth protocol.
- Security & Compliance 8
- Strong security foundation with regular updates, but compliance responsibility falls on how you deploy and operate it.
- Scalability & Reliability 7
- Can scale to enterprise levels but requires proper infrastructure setup and operational expertise.
- Customization & Control 10
- Complete control over every aspect including source code, deployment, data storage, and custom extensions.
- Pricing Transparency 10
- Completely free and open source with no hidden costs beyond your own infrastructure and operational expenses.
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What Keycloak's website sends to your browser.
Scanned 2026-08-25. Grade headers F, scoring 5 out of 100.
This is one narrow, automated check of the HTTP response headers on the vendor's own website. It says nothing about how the product itself is built, how it stores your data, or whether it has ever been audited. A good grade here is a small signal that somebody was paying attention.