--- title: "Zitadel Review: Open Source Multi-Tenant Identity | IDSync" description: "Zitadel is an open source identity platform with multi-tenant SaaS. See strengths, limitations and when to choose it over Auth0 or Keycloak." lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "SoftwareApplication", "name": "Zitadel", "applicationCategory": "SecurityApplication", "applicationSubCategory": "SSO", "url": "https://zitadel.com", "description": "Zitadel is an open source identity and access platform built around multi-tenancy from day one. It provides authentication, SSO, MFA, OIDC / OAuth2, SAML, machine-to-machine credentials and a management API, available as self-hosted open source or as Zitadel Cloud. It is often picked by SaaS builders who want a B2B-ready identity layer they can host themselves or consume as SaaS.", "offers": { "@type": "Offer", "category": "tiered" }, "dateModified": "2026-05-31T13:58:15.541473+00:00" }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "What is Zitadel?", "acceptedAnswer": { "@type": "Answer", "text": "Zitadel is an open source identity and access platform built around multi-tenancy from day one. It provides authentication, SSO, MFA, OIDC / OAuth2, SAML, machine-to-machine credentials and a management API, available as self-hosted open source or as Zitadel Cloud. It is often picked by SaaS builders who want a B2B-ready identity layer they can host themselves or consume as SaaS." } }, { "@type": "Question", "name": "Who is Zitadel best for?", "acceptedAnswer": { "@type": "Answer", "text": "B2B SaaS teams that want multi-tenant identity with both self-hosted open source and managed cloud options." } } ] }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://idsync.com/" }, { "@type": "ListItem", "position": 2, "name": "Directory", "item": "https://idsync.com/directory" }, { "@type": "ListItem", "position": 3, "name": "SSO", "item": "https://idsync.com/directory/category/sso" }, { "@type": "ListItem", "position": 4, "name": "Zitadel", "item": "https://idsync.com/directory/zitadel" } ] } ] --- [![IDSync — identity software buyer platform](/assets/idsync-logo-BKS89EW4.png)](/) [Directory](/directory) [Compare](/compare) [Resources](/resources) [Browse tools](/directory)[Run Stack Finder](/stack-finder) 1. [Home](/) 2. [Directory](/directory) 3. [SSO](/directory/category/sso) 4. Zitadel ![Zitadel company logo](https://www.google.com/s2/favicons?sz=128&domain=zitadel.com) # Zitadel Open source identity and access platform with built-in multi-tenancy, SSO, MFA and a managed Zitadel Cloud SaaS. Last updated 3 months ago [Visit site](https://zitadel.com) Quick answer ## What is Zitadel? Short answer Zitadel is an open source identity and access platform built around multi-tenancy from day one. It provides authentication, SSO, MFA, OIDC / OAuth2, SAML, machine-to-machine credentials and a management API, available as self-hosted open source or as Zitadel Cloud. It is often picked by SaaS builders who want a B2B-ready identity layer they can host themselves or consume as SaaS. Best for B2B SaaS teams that want multi-tenant identity with both self-hosted open source and managed cloud options. When to choose You are building B2B SaaS, need multi-tenant identity, and want to choose between self-hosted and SaaS. When not to choose You want a no-code CIAM with deep prebuilt funnels or already standardized on Okta / Entra for everything. Related tools & categories [SSO](/directory/category/sso)[Workforce IAM](/directory/category/workforce-iam)[Developer Authentication](/directory/category/developer-auth)[Auth0](/directory/auth0)[Keycloak](/directory/keycloak)[Run the IAM Stack Finder](/stack-finder)[Report: The State of AI Agent Identity 2026](/reports/state-of-ai-agent-identity-2026) ## Categories [SSO ★](/directory/category/sso)[Workforce IAM](/directory/category/workforce-iam)[Developer Authentication](/directory/category/developer-auth) ## Common use cases - B2B SaaS multi-tenant auth - SSO and SAML federation - Machine-to-machine clients - Self-hosted identity for regulated environments ## Strengths - First-class multi-tenancy - Open source with managed option - Modern API-driven design - Active development ## Limitations & considerations - Smaller ecosystem than Auth0 - UI customization more limited than CIAM specialists - Some advanced features tied to paid tiers ## Pricing model summary Open source is free to self-host. Zitadel Cloud offers free, pay-as-you-go and enterprise tiers, with paid plans typically scaling by active users and features. [View vendor pricing page ↗](https://zitadel.com/pricing) ## Integrations OIDC OAuth 2.0 SAML SCIM LDAP ## Fit Company size startup, smb, mid\_market, enterprise Deployment saas, self\_hosted Source open source Pricing model tiered ## Alternatives & comparisons [Auth0](/directory/auth0) Auth0 is a developer-centric customer identity and access management (CIAM) platform offering authentication, authorization, and user management for web and mobile applications, now operating as Okta Customer Identity Cloud. [Compare Zitadel vs Auth0 →](/compare/zitadel-vs-auth0) [Keycloak](/directory/keycloak) Keycloak is the most widely deployed open source IAM platform, providing enterprise-grade SSO, MFA, SAML, OIDC, LDAP, and Kerberos support in a self-hosted, Apache 2.0 licensed package maintained by Red Hat. [Compare Zitadel vs Keycloak →](/compare/zitadel-vs-keycloak) [Ory](/directory/ory) Open source identity, authorization and zero trust stack (Kratos, Hydra, Keto, Oathkeeper) available self-hosted or as Ory Network SaaS. [Compare Zitadel vs Ory →](/compare/zitadel-vs-ory) [SuperTokens](/directory/supertokens) Open source auth library with prebuilt UI, session management and self-hosted or managed deployment options. [Compare Zitadel vs SuperTokens →](/compare/zitadel-vs-supertokens) IDSync provides educational buyer guidance based on publicly available information, editorial review, and user-submitted data. Vendor information should be verified before purchase. [Who we are, our methodology & disclosure policy](/about). Zitadel and its logo are trademarks of their respective owner. IDSync is an independent buyer resource and does not imply endorsement unless explicitly stated. ### Take action [Request vendor shortlist](/request-shortlist)[Run the IAM Stack Finder](/stack-finder)[Request vendor intro](/contact)[Docs ↗](https://zitadel.com/docs)[Pricing ↗](https://zitadel.com/pricing) ### Work at Zitadel? Claim this profile to keep it current. 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