Freedom251 › Membership Management Software
Admidio
What Admidio is
Admidio is free, self-hosted membership management software for clubs, groups, and organizations. Its member portal lets users manage profiles and configurable fields, while access controls protect member data from unauthorized people. Administrators can configure member lists, export them to Excel, PDF, or CSV, and import new or updated users from CSV files. Members can accept or cancel events, with iCal export listed in the documentation. Photo galleries and file sharing support visitors and member groups. Downloadable plugins extend the system. From version 5.0, Admidio supports single sign-on through SAML 2.0 and OpenID Connect, and optional two-factor authentication is documented. It is distributed under the GNU General Public License version 2.0. Current requirements are PHP 8.2 or higher plus MariaDB 10.0+, MySQL 5.0+, or PostgreSQL 11.0+. Android, iOS, self-hosted, and web access are listed. The plan costs nothing with no license fees.
Who it suits
Admidio suits clubs and organizations needing self-hosted member records, events, files, exports, and portal access.
What it does well
- Free with no license fees
- Configurable member records and lists
- CSV import and multiple export formats
- SAML and OpenID Connect SSO
- Plugins extend functionality
What to know first
- Requires self-hosting
- Needs PHP 8.2 or higher
- No free trial is offered
- Database server requirements apply
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Admidio | Free; no license fees · Self-hosted · PHP 8.2+ · MariaDB 10.0+, MySQL 5.0+, or PostgreSQL 11.0+ | Free |
As admidio.org lists them, read 12 Oct 2026. The maker's own page has the final word.
Verdict
Admidio provides broad membership, event, file, and access features without license fees. Its self-hosted requirements make server setup part of adoption.
Facts from Admidio's own pages
- Access control
- The site says access control protects member data from unauthorized people. · admidio.de, 12 Oct 2026
- Data import
- Administrators can import new users or update existing users using a CSV file. · admidio.de, 12 Oct 2026
- Events
- Members can commit to or cancel events, and the documentation lists iCal export support. · admidio.de, 12 Oct 2026
- Extensions
- Plugins can extend Admidio’s functionality, and the site links to downloadable plugins. · admidio.org, 12 Oct 2026
- Free plan
- Yes · admidio.org, 20 Sept 2026
- License
- Admidio is distributed under the GNU General Public License version 2.0. · admidio.org, 12 Oct 2026
- Lists and exports
- Member lists are configurable and can be exported to Excel, PDF, or CSV. · admidio.de, 12 Oct 2026
- Member portal
- Yes · admidio.org, 20 Sept 2026
- Member records
- Users can manage member profiles and configure profile fields. · admidio.org, 12 Oct 2026
- Photos and files
- The product supports photo galleries and sharing documents or files with visitors and member groups. · admidio.de, 12 Oct 2026
- Purpose
- Admidio is free online membership management software optimized for clubs, groups, and organizations. · admidio.de, 12 Oct 2026
- Recent security fixes
- The 5.0.16 release announcement describes fixes to authorization checks in exports, inventory, forums, and RSS feeds. · admidio.org, 12 Oct 2026
- Requirements
- The current download page requires PHP 8.2 or higher and MariaDB 10.0+, MySQL 5.0+, or PostgreSQL 11.0+. · admidio.org, 12 Oct 2026
- Single sign-on
- Starting with version 5.0, Admidio supports SSO using SAML 2.0 and OpenID Connect. · admidio.org, 12 Oct 2026
- Support
- The site directs users to its forum for support and development information. · admidio.de, 12 Oct 2026
- Two-factor authentication
- Version 5.0 documentation says two-factor authentication can be enabled as an optional login setting. · admidio.org, 12 Oct 2026
Where Admidio stands on Freedom251
- Membership Management Software#12 of 106