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 50 alternatives to Keycloak for a variety of platforms, including Web-based, Self-Hosted, SaaS, Linux and Windows apps. The best Keycloak alternative is authentik, which is both free and Open Source. Other great apps like Keycloak are ZITADEL , Authelia, Hanko and AuthKit.
authentik is an open-source identity provider focused on flexibility and versatility.
authentik is the most popular Mac, Linux & Self-Hosted alternative to Keycloak.
authentik is the most popular Open Source & free alternative to Keycloak.
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 Keycloak.
Protect your applications with Single Sign-On and 2 Factor. Authelia is an open-source full-featured authentication server available on Github.
Hanko is a modern open source Authentication & User Management system – built and hosted in the EU. Alternative to Clerk, Auth0, Stytch, Descope.
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.
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.
Stack Auth is not an OpenID or Oauth provider. It is a web backend for a set of libraries for authentication, but it does not do OpenID or Oauth
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.
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:
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.
LemonLDAP::NG is the most popular Windows alternative to Keycloak.
Microsoft Entra ID (formerly Azure Active Directory) is a comprehensive identity and access management cloud solution that provides a robust set of capabilities to manage users and groups.
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Open source, simple component-based integrations, and passkeys - what's not to like?