Free, open-source, self-hosted membership management software for clubs, associations, and community organizations.
Admidio is a free, open-source membership and organization management application that has been in active development since 2004. It is designed specifically for associations, clubs, and community groups that need to manage members and administrative tasks online.
The software is self-hosted and built in PHP, so organizations install it on their own web hosting rather than using a hosted SaaS product.
Admidio includes a role-based member database with access controls, customizable and exportable membership lists (Excel, PDF, CSV), event management with online registration, photo galleries, document and file sharing, and CSV import/update tools for member data.
The platform supports plugins for extended functionality and lets organizations assign different rights to roles such as group leaders and webmasters.
Admidio has been developed continuously since 2004, with an active open-source community maintaining the project on GitHub and supporting users through forums and social channels.
Yes, Admidio is free and open source with no licensing fees.
Yes, it's a self-hosted PHP application that you install on your own web hosting.
It's designed for clubs, associations, and community organizations managing members, events, and documents.
Yes, it includes event management with online registration functionality.