Authgear is an open-source authentication and user management platform designed to simplify the integration of secure and customizable identity solutions into web and mobile applications. It supports various authentication methods, including password-based login, social logins, multi-factor authentication, and passwordless options, providing developers with flexibility and enhanced security. Authgear offers a self-hosted server that allows organizations to maintain full control over user data and authentication workflows, ensuring compliance and privacy. With its modular architecture and developer-friendly APIs, Authgear enables seamless user management, SSO capabilities, and extensibility to fit diverse application needs.