Compare
Auth0 vs Keycloak
Keycloak is open-source and self-managed, Auth0 provides managed cloud with extensive AI-agent capabilities.
Which to pick
Pick Auth0 if you want…
- Unified identity platform for apps and AI agents
- Managed SaaS authentication
- Integrations with Okta universal logout (on Auth0's list, not Keycloak's)
Pick Keycloak if you want…
- Open-source SSO and auth management
- Enterprise-grade managed identity
- A free, open-source tool
- Integrations with OpenID Connect, OAuth 2.0 or SAML 2.0 (on Keycloak's list, not Auth0's)
Auth0 is a hosted commercial service, while Keycloak is self-hosted open source.
Side by side
- What it is
- Auth0:Auth0 provides scalable authentication and authorization for apps, APIs, and AI agents.
- Keycloak:Keycloak is an open-source identity and access management solution providing SSO, social login, and fine-grained authorization.
- Best for
- Auth0:Unified identity platform for apps and AI agents
- Keycloak:Open-source SSO and auth management
- Who it’s for
- Auth0:Developers building B2C, B2B SaaS, AI agents, or machine-to-machine services.
- Keycloak:Developers and ops teams needing centralized authentication for apps and services
- Pricing
- Auth0:Freemium
- Keycloak:Open source
- Plans
- Auth0:Free $0 · Essentials $35 per month · Professional $240 per month
- Keycloak:—
- Open source
- Auth0:—
- Keycloak:Yes, 37,083 GitHub stars
- Works with
- Auth0:Okta universal logout
- Keycloak:OpenID Connect, OAuth 2.0, SAML 2.0, LDAP, Active Directory
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.
Keycloak features
- Single-Sign-On. Users log in once to access multiple applications without re-authenticating.
- Identity Brokering & Social Login. Add social network or external OpenID Connect/SAML providers via the admin console without code changes.
- User Federation. Connect to existing LDAP or Active Directory directories, or custom user stores.
- Admin & Account Consoles. Central UI for managing apps, users, policies and for users to manage profiles and MFA.
- Authorization Services. Define fine-grained permission policies beyond role-based access.
- Standard Protocol Support. Built-in OpenID Connect, OAuth 2.0 and SAML 2.0 support.
Auth0 vs Keycloak FAQ
Is Auth0 or Keycloak free?+
Auth0 has a free plan; paid plans start at $35/month (Essentials). Keycloak is free and open source.
Which is cheaper, Auth0 or Keycloak?+
Keycloak is free, so it costs less. Auth0 starts at $35/month (Essentials).
Is Auth0 or Keycloak open source?+
Keycloak is open source (keycloak/keycloak on GitHub, Apache-2.0 license). DevHunt has no public source repository on record for Auth0.
Do Auth0 and Keycloak integrate with the same tools?+
Their integration lists don't overlap: Auth0 lists Okta universal logout; Keycloak lists OpenID Connect, OAuth 2.0, SAML 2.0, LDAP and 1 more.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.