Free tool for organizations

Manage your association, group or organization with a lot of features and few clicks.

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What is Admidio and who can use it?

Admidio is a free online membership management, which is optimized for associations, groups and organizations. In addition to classic user management it consists of a variety of modules that can be installed and adjusted on a new or existing homepage.

For web masters

Admidio is specially designed for webmasters who want to maintain their association, group or organization and want to use a membership management including access control.


If you want to participate in the project, get support and information about the continious development you’ll find all you need in our forum.

Overview over the most important functionality

Access control

Protects member data from the eyes of unauthorized persons


Freely configurable member lists with export to different file types (Excel, PDF, CSV)


Create events with the possibility to commit or cancel


Upload, manage and view photos and albums within a photo gallery

Documents & Files

Provide documents and other files for visitors and member groups

Rights management

Individually assigning rights to groups, departments and properties


Import new or update existing user by using a CSV file.


Extend the range of Admidio’s functionality by including different extensions (plugins)