Clerk vs ZITADEL: side-by-side comparison (2026)

Clerk: Authentication and user management platform with pre-built UI components. Built by Clerk.

ZITADEL: Open-source, multi-tenant identity platform for authn, authz, and SSO. Built by ZITADEL.

The table above shows where their features, integrations, deployment and company size fit differ.

Clerk is made by Clerk. ZITADEL is made by ZITADEL. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Often, yes. Clerk and ZITADEL are both CIAM products, and both cover Authentication, Authorization, SSO. Use the table above to see where features, deployment and company size fit differ.