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Zitadel

Open-source, multi-tenant identity platform available as a managed cloud or self-hosted.

Open sourceSelf-hostableAuthentication providers
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About Zitadel

Zitadel is an identity and access management platform written in Go that you can self-host or use as Zitadel Cloud. It was designed for B2B and multi-tenant products from the start: organisations, delegated administration and per-tenant identity providers are core concepts rather than add-ons. It supports OpenID Connect, OAuth 2.0 and SAML, passkeys and other MFA, social and enterprise login, role-based access control, actions for custom logic, and an event-sourced audit trail of every change. APIs and SDKs cover common languages, and a hosted login UI can be customised or replaced. The code is open source under AGPL-3.0. The cloud offers a free tier and a paid Pro plan with data residency choices in several regions, while enterprise support is sold separately for self-hosters. Compared with Keycloak it feels more modern and API-driven, though its ecosystem and pool of experienced operators is smaller.

Best for: B2B SaaS teams that want multi-tenant identity with the option to self-host.

Pros and cons

What works

  • Multi-tenancy and delegated admin built into the core
  • Choice of managed cloud or self-hosting the same code
  • Full audit trail from its event-sourced design

Why people leave

  • AGPL licence may need legal review for some companies
  • Smaller community than Keycloak
  • Free cloud tier is limited in daily active users

Top Zitadel alternatives

See all 5
  1. 1Keycloak logo
    Keycloak

    More established open-source server with a permissive Apache licence.

    66.5
  2. 2Logto logo
    Logto

    Open-source with a polished developer experience and a cheaper starting cloud plan.

    62.6
  3. 3Ory logo
    Ory

    Headless, modular components with an Apache licence for teams building their own UI.

    59.6
  4. 4Auth0 logo
    Auth0

    Fully managed with a big ecosystem if self-hosting is no longer appealing.

    57.2
  5. 5WorkOS logo
    WorkOS

    Managed B2B auth free up to a million users, paying only for enterprise connections.

    55.3

Why people left Zitadel

In reviewers' own words, from reviews of the apps they moved to. These are their opinions, not ours.

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Zitadel: common questions

Is Zitadel free?

Yes. Zitadel is free, open-source software that you can host yourself.

Is Zitadel open source?

Yes. The source code is on GitHub at zitadel/zitadel. You can also run it on your own server.

What platforms does Zitadel run on?

Zitadel is available for Web and Self-hosted.

What are the best alternatives to Zitadel?

The highest-ranked Zitadel alternatives right now are Keycloak, Logto and Ory. See the full ranked list for pricing, platforms and verified facts.

See all 5 Zitadel alternatives