Your data, your control. Fully open source, authentication and authorization. No lock-ins. Deployment in Railway.app | Heroku in 120 seconds || Spin a docker image as a micro-service in your infra. Built in login page and Admin panel out of the box.


The best open source alternative to Okta is VoidAuth. If that doesn't suit you, our users have ranked more than 50 alternatives to Okta and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Okta are Keycloak, authentik, Authelia and ZITADEL .
Your data, your control. Fully open source, authentication and authorization. No lock-ins. Deployment in Railway.app | Heroku in 120 seconds || Spin a docker image as a micro-service in your infra. Built in login page and Admin panel out of the box.


Nubus is a 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.




The Gluu Server is a container distribution of free open source software (FOSS) for identity and access management (IAM). SaaS, custom, open source and commercial web and mobile applications can leverage a Gluu Server for user authentication, identity information, and policy...
Single sign-on solution specifically built for modern FOSS hosted services.
Ory builds cloud-native authentication (login), authorization (permission), delegation (OAuth2, OpenID Connect), and user management software. You can deploy what you need yourself or use the Ory Network and get started in minutes.


An open-source, standards-compliant, and flexible OpenID Connect and OAuth 2.0 framework for ASP.NET Core.




Community-developed identity management system with a flexible data model, multiple extension points and scripting support. Can manage a wide range of systems through the Identity Connector Framework.

Tesseral is the only open source auth provider focused exclusively on serving B2B SaaS. With just a few simple lines of code, any developer can launch an elegant login page with support for common authentication factors like passwords, magic links, and social login (e.g.

SuperTokens is an open source user authentication solution. Using SuperTokens, developers can add secure, hassle free auth to their mobile application or website in less than a day. It is an alternative to Auth0, Firebase Auth and AWS Cognito.




Auth.js is a runtime agnostic library based on standard Web APIs that integrates deeply with multiple modern JavaScript frameworks to provide an authentication experience that’s simple to get started with, easy to extend, and always private and secure!
idaas.nl provides an advanced identity platform fully configurable using the web interface or via APIs. It provides capabilities related to user registration, authentication and delegated authorization.



Its free, flexible and less monolithic architecture than Keycloak. But the learning curve is pretty steep