Auth0 is described as 'You can connect any application (written in any language or on any stack) to Auth0 and define its Connection, the method used to authenticate the users of that application:' and is a identity management tool in the development category. There are more than 50 alternatives to Auth0, not only websites but also apps for a variety of platforms, including SaaS, Self-Hosted, Linux and Mac apps. The best Auth0 alternative is Keycloak, which is both free and Open Source. Other great sites and apps similar to Auth0 are ZITADEL , Authelia, AuthKit and Hanko.
Open Source Identity and Access Management for modern Applications and Services.
Keycloak is the most popular Linux & Self-Hosted alternative to Auth0.
Keycloak is the most popular Open Source & free alternative to Auth0.
Secure authentication management for your application. Customize as you grow, with easy APIs and programmable workflows. Focus on growing, your login is in good hands.
ZITADEL is the most popular Web-based & SaaS alternative to Auth0.
Protect your applications with Single Sign-On and 2 Factor. Authelia is an open-source full-featured authentication server available on Github.
AuthKit is a Radix-powered open source authentication UI built for effortless customizations. User Management is the backend platform handling email verification, account linking, bot blocking, organization modeling, and more.
Hanko is a modern open source Authentication & User Management system – built and hosted in the EU. Alternative to Clerk, Auth0, Stytch, Descope.
Open-source authentication and user management platform offering passkey-based SSO, centralized login, user invitations, self-registration, and email integration for self-hosted deployments. Emphasizes privacy, admin and user ease, local data control, and strong security.
Stack is an open-source, self-hostable, and highly customizable authentication and user management system.
Kanidm is an identity management server, acting as an authority on account information, authentication and authorisation within a technical environment.
Better Auth is a framework-agnostic authentication and authorization framework for TypeScript. It provides a comprehensive set of features out of the box and includes a plugin ecosystem that simplifies adding advanced functionalities.
FusionAuth is an auth for any app. Get everything you need for secure registration and user management in minutes. Single-tenant, on-prem or private cloud, custom emails with localization, social login, and more.
Almost everyone thinks FusionAuth is a great Auth0 alternative.
FusionAuth is the most popular Windows & Mac alternative to Auth0.
Okta's Workforce and Customer Identity Clouds enable secure access, authentication, and automation—putting identity at the heart of business security and growth.
Most users think Okta is a great Auth0 alternative.
Okta is the most popular commercial alternative to Auth0.
Clerk is more than a "sign-in box." Integrate complete user management UIs and APIs, purpose-built for React, Next.js, and the Modern Web.
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Similar feature set, but on-premise and free.