Keycloak is described as 'Open Source Identity and Access Management for modern Applications and Services' and is a identity management tool in the network & admin category. There are more than 100 alternatives to Keycloak for a variety of platforms, including Web-based, SaaS, Self-Hosted, Linux and Windows apps. The best Keycloak alternative is VoidAuth, which is both free and Open Source. Other great apps like Keycloak are authentik, Authelia, ZITADEL and Hanko.
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.
United States
authentik is an open-source identity provider focused on flexibility and versatility.
Germany
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Protect your applications with Single Sign-On and 2 Factor. Authelia is an open-source full-featured authentication server available on Github.
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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.
Switzerland
Hanko is a modern open source Authentication & User Management system – built and hosted in the EU. Alternative to Clerk, Auth0, Stytch, Descope.
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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.
United States
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.
Kanidm is an identity management server, acting as an authority on account information, authentication and authorisation within a technical environment.
Stack is an open-source, self-hostable, and highly customizable authentication and user management system.
United States
Phase Two builds on top of Keycloak, one of the most widely used open source identity and access management systems in the world. Our extensions bring multi-tenancy, audit logging, a self-service admin portal, and more to enhance Keycloak for SaaS and on-premise use cases.
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:
United States
LemonlLDAP::NG is a modular Web-SSO based on Apache::Session modules. It simplifies the build of a protected area with a few changes in the application. It manages both authentication and authorization and provides headers for accounting.
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