Identity and SSO platforms hold the keys to your stack. Self-hosted options keep them on your side.

User authentication and session management framework

Why consider the swap

If you currently rely on Auth0 and want more control over data, lower long-term costs, or a open-source licensing model, Zitadel covers most of the same ground.

What you trade off

Most open-source alternatives require more setup than their commercial counterparts and may lag on polish, mobile apps, or ecosystem integrations. Check the project’s documentation for current feature parity with Auth0 before committing.

Where to start

• Project page: Zitadel
• Comparison reference: Auth0

This recommendation is indexed from awesome-oss-alternatives. Read their full project notes for the latest changes.