Keycloak is a commercial multi-factor authentication and single sign-on tool by keycloak. ZITADEL is a commercial multi-factor authentication and single sign-on tool by ZITADEL. Compare features, ratings, integrations, and community reviews side by side to find the best multi-factor authentication and single sign-on fit for your security stack.
Based on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
Startups and mid-market teams building custom applications need Keycloak because it's open-source IAM you can actually modify without vendor lock-in, and self-host it on infrastructure you already control. The tool supports OAuth 2.0, OpenID Connect, and SAML protocols out of the box, plus passkey-based MFA and multi-tenancy through its Organizations feature, covering NIST CSF 2.0's Identity Management function without licensing per user. Skip this if your organization needs managed SaaS convenience and hands-off operations; Keycloak requires DevOps capacity to deploy, patch, and maintain in production.
Open-source IAM solution for SSO, MFA, and identity federation
Open-source, multi-tenant identity platform for authn, authz, and SSO.
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Common questions about comparing Keycloak vs ZITADEL for your multi-factor authentication and single sign-on needs.
Keycloak: Open-source IAM solution for SSO, MFA, and identity federation. built by keycloak. headquartered in United States. Core capabilities include Single sign-on (SSO), Multi-factor authentication with passkeys and recovery codes, Identity federation with external providers..
ZITADEL: Open-source, multi-tenant identity platform for authn, authz, and SSO. built by ZITADEL. Core capabilities include Hosted login page with customizable branding, Multi-factor authentication (MFA) enforcement, Passwordless authentication via Passkeys..
Both serve the Multi-Factor Authentication and Single Sign-On market but differ in approach, feature depth, and target audience.
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