Auth0 Alternatives

Own your identity stack instead of renting it per monthly active user. Discover open source, self-hosted alternatives to Auth0 and Firebase Auth for authentication, authorization, and user management.

Open Source, Self-Hosted Auth0 Alternatives

ZITADEL

14,9861,295

ZITADEL is an open-source identity and user management platform, and a self-hosted alternative to Auth0 and Okta. It is API-first and multi-tenant by design: every customer or business unit is an "organization" with its own users, branding, and policies. State is stored as an event stream in PostgreSQL, which gives every login, grant, and config change a built-in audit trail.

9/9/20261295 contributors