FusionAuth

What is FusionAuth?

FusionAuth is an open-source authentication and authorization platform designed to help developers implement user management and identity solutions. It provides a complete suite of tools for managing customer authentication, including single sign-on (SSO), multi-factor authentication (MFA), and support for standard protocols like OAuth2 and OpenID Connect. The platform is built for development teams and businesses that need flexible, customizable identity solutions without vendor lock-in. FusionAuth can be deployed on-premises or in the cloud, giving organizations control over their authentication infrastructure and user data. Key features include user management, customizable login interfaces, role-based access control, and integration capabilities with existing applications and systems. The platform supports passwordless authentication methods and various MFA options, enabling organizations to implement modern security practices. As an open-source solution, FusionAuth offers transparency and the ability to modify the codebase to fit specific requirements. It serves organizations ranging from startups to enterprises that prioritize security, compliance, and user experience in their authentication systems. The platform is particularly suited for companies building customer-facing applications or managing multiple user directories that require centralized identity management and control.