Auth0

Sure, Auth0 Auth0 is awesome.

But have you considered these open source alternatives?

They are free, self-hostable and community-driven.

Check by yourself: Authelia  Authelia , Keycloak  Keycloak , 🔐  Hanko , 🔐  Zitadel .

  1. So is Authelia Authelia

    The Single Sign-On Multi-Factor portal for web apps

    ★ 23K Security Identity management License: Apache-2.0

    Authelia is an open-source authentication and authorization server providing two-factor authentication and single sign-on (SSO) for your applications via a web portal. It acts as a companion for reverse proxies by allowing, denying, or redirecting requests.

    preview

  2. So is Keycloak Keycloak

    Open Source Identity and Access Management

    ★ 25.6K Security Identity management License: Apache-2.0

    Add authentication to applications and secure services with minimum effort. No need to deal with storing users or authenticating users.

    Keycloak provides user federation, strong authentication, user management, fine-grained authorization, and more.

  3. So is 🔐 Hanko

    The Complete Authentication and User Management Solution for the Passkey Era

    ★ 7.7K Security Identity management License: AGPLv3, MIT

    Hanko is an open-source authentication and user management solution with a focus on moving the login beyond passwords while being 100% deployable today.

  4. So is 🔐 Zitadel

    Identity and Access Management

    ★ 9.8K Security Identity management Access management License: Apache-2.0

    ZITADEL is the identity infrastructure, simplified for you.