Admidio
Manage your organization online
Admidio is a free, open-source membership management system for clubs, associations, groups, and organizations. It provides a flexible and self-hosted solution for managing members, organizing groups and roles, and controlling access to information. With customizable profile fields and a powerful permissions system, Admidio adapts to the individual structure and needs of your organization.
Beyond membership management, Admidio offers a wide range of features, including customizable member lists, event management, online registration, inventory management, messaging and email communication, discussion forums, photo galleries, and document and file management. As a Progressive Web App (PWA), Admidio can also be installed on mobile and desktop devices.
Admidio is easy to integrate into existing websites or use as a standalone application. Since it is self-hosted, you retain full control over your data without licensing fees.