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Auth0 vs Zitadel
Auth0 is a hosted SaaS auth service, while ZITADEL offers open-source self-hosted and cloud options with multi-tenant focus.
Auth0Authentication and authorization platform
ZitadelOpen-source identity infrastructure with SSO and multi-tenancyWhich to pick
Pick Auth0 if you want…
- Unified identity platform for apps and AI agents
- Hosted SaaS authentication
- Integrations with Okta universal logout (on Auth0's list, not Zitadel's)
Pick Zitadel if you want…
- API-first multi-tenant identity infrastructure
- Open-source code (zitadel/zitadel on GitHub, AGPL-3.0 license)
- Integrations with Google, Microsoft or GitHub (on Zitadel's list, not Auth0's)
Side by side
- What it is
- Auth0:Auth0 provides scalable authentication and authorization for apps, APIs, and AI agents.
- Zitadel:ZITADEL is an open-source, multi-tenant identity platform offering SSO, passwordless login and role-based access via APIs.
- Best for
- Auth0:Unified identity platform for apps and AI agents
- Zitadel:API-first multi-tenant identity infrastructure
- Who it’s for
- Auth0:Developers building B2C, B2B SaaS, AI agents, or machine-to-machine services.
- Zitadel:Developers building consumer, B2B or employee applications needing authentication and authorization.
- Pricing
- Auth0:Freemium
- Zitadel:Freemium
- Plans
- Auth0:Free $0 · Essentials $35 per month · Professional $240 per month
- Zitadel:FREE US$0/Month · PRO US$100/Month per month
- Open source
- Auth0:—
- Zitadel:Yes, 15,146 GitHub stars
- Works with
- Auth0:Okta universal logout
- Zitadel:Google, Microsoft, GitHub, REST API, gRPC
Auth0 features
- Universal Login. Customizable login experience with passwordless, social, and adaptive MFA.
- Single Sign-On. Enterprise federation and cross-app SSO for human users and AI agents.
- Machine-to-Machine Auth. Short-lived tokens, client-credentials flow and M2M add-ons for services.
- Fine-Grained Authorization. Scalable APIs for granular access control, including RAG and AI contexts.
- Token Vault & MCP Auth. Secure storage of tokens and authorization for model-context protocols.
- Extensibility via Actions & Forms. Serverless hooks and no-code visual editor to extend login flows.
Zitadel features
- Hosted login UI. Customizable hosted login page with social and passwordless options.
- API-first authentication. REST and gRPC APIs to embed login flows directly in applications.
- Role-Based Access Control. Define permissions per role for fine-grained authorization.
- Multi-tenant core. Create unlimited organizations and projects to isolate customers.
- Extensible actions. Run workflow scripts on predefined events without deploying code.
- Multi-factor & Passkeys. Enforce MFA or passwordless passkey authentication for stronger security.
Auth0 vs Zitadel FAQ
Is Auth0 or Zitadel free?+
Auth0 has a free plan; paid plans start at $35/month (Essentials). Zitadel has a free plan and paid plans.
Is Auth0 or Zitadel open source?+
Zitadel is open source (zitadel/zitadel on GitHub, AGPL-3.0 license). DevHunt has no public source repository on record for Auth0.
Do Auth0 and Zitadel integrate with the same tools?+
Their integration lists don't overlap: Auth0 lists Okta universal logout; Zitadel lists Google, Microsoft, GitHub, REST API and 1 more.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.