Open Source Identity and Access Management for modern Applications and Services.




Nubus is described as 'Modular open-source solution for centralized identity & access management, providing secure user management, role-based access control, and Single Sign-On (SSO) via a central web portal' and is a identity management tool in the development category. There are more than 25 alternatives to Nubus for a variety of platforms, including Self-Hosted, Web-based, SaaS, Linux and Android apps. The best Nubus alternative is Keycloak, which is both free and Open Source. Other great apps like Nubus are VoidAuth, authentik, ZITADEL and Authelia.
Open Source Identity and Access Management for modern Applications and Services.




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.

authentik is an open-source identity provider focused on flexibility and versatility.




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.

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.

Stack is an open-source, self-hostable, and highly customizable authentication and user management system.


Rauthy is a lightweight and easy to use Identity Provider supporting OpenID Connect, OAuth 2.0 and PAM. It aims to be simple to both set up and operate, with very secure defaults and lots of config options, if you need the flexibility.


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.




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.
Amazon Cognito lets you add user sign-up/sign-in and access control to your web and mobile apps quickly and easily. Cognito scales to millions of users, and supports sign-in with social identity providers such as FB, Google, and Amazon, and SAML 2.0.
