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Alternatives

Open source alternatives to Auth0

Auth0 covers hosted identity: login, SSO, and user management. These open projects do the same job without the lock-in.

Why people switch: MAU-based pricing scales with your success, not your usage of the feature.

  • Keycloak

    The enterprise default; every protocol you will ever need.

    Apache-2.0self-hostable
  • Zitadel

    Modern multi-tenant IAM with a much lighter footprint.

    Apache-2.0self-hostable
  • OpenFGA

    Pairs with any of these for Zanzibar-style fine-grained authorization.

    Apache-2.0self-hostableIn the Open Family

All alternatives

Other tools people replace

NotionAirtableSlackDatadogHashiCorp VaultTerraform