Best Free & Open Source Alternatives to Auth0
Compare 3 open-source auth0 alternatives including Keycloak, SuperTokens and Stack Auth
If you're looking for the best open-source alternative to Auth0, Keycloak is a strong place to start. If it doesn't quite fit your needs, there are plenty of other great options worth exploring, including SuperTokens and Stack Auth. We've ranked the top alternatives to help you compare your options and find the right fit.
Keycloak
Open-source identity and access management with SSO, OAuth2, OIDC, and SAML support for modern applications.
Auth0
SuperTokens
Open-source authentication solution, an alternative to Auth0 and Firebase Auth that you can self-host.
Auth0
Stack Auth
Open-source authentication platform for Next.js and React, built as an alternative to Auth0 and Clerk.
Auth0Frequently Asked Questions
Are there any open source alternatives to Auth0?
Yes, there are 3 open source alternatives to Auth0. Popular options include Keycloak, SuperTokens, Stack Auth. These alternatives are free to use and many offer self-hosting options.
What is the best free alternative to Auth0?
The best free alternative to Auth0 depends on your specific needs. Keycloak is a popular choice with self-hosting capabilities. All alternatives listed here are open source and free to use.
Can I self-host an alternative to Auth0?
Yes, 3 of the alternatives listed here can be self-hosted, giving you complete control over your data and privacy.
Why should I switch from Auth0 to an open source alternative?
Open source alternatives to Auth0 offer several advantages: no vendor lock-in, complete data ownership, no subscription fees, the ability to self-host for privacy and security, and active community support. You can also customize the software to fit your specific needs.
Auth0
Auth0 is a flexible, drop-in solution to add authentication and authorization services to your applications. It provides identity management, SSO, MFA, and social login for any platform.