Mobilizon website, federated events platform, community groups, activities, calendars, moderation, and open source

Mobilizon

A federated event-organizing website and open-source platform for creating events, activities, groups, community calendars, and self-hosted Mobilizon instances.

Main website

mobilizon.org is the main public website for Mobilizon.

Core model

Federated event organizing, community groups, and self-hosted activity calendars.

Domain created

October 11, 2018.

Mobilizon is a federated event-organizing platform for communities, activities, and groups.View site icon on Mobilizon

What Mobilizon is

Mobilizon official site presents Mobilizon as an online platform for creating, sharing, and finding events. It describes a network of interconnected Mobilizon websites where communities can organize activities without depending on one giant centralized platform.

Who uses Mobilizon

Mobilizon is used by associations, activists, local groups, cooperatives, educators, public institutions, community organizers, and self-hosters who need event pages, group spaces, calendars, and participation tools controlled by their own organization or instance.

How the website works

The public website explains Mobilizon features, points readers to existing Mobilizon websites, describes use cases for custom platforms, and links to documentation, contact information, and legal information. It is the project website, while actual events live across separate Mobilizon instances.

Events, activities, and groups

Mobilizon supports creating, editing, publishing, and sharing events. It also supports activities that can last all year, group pages for community organization, public content, participation management, and search by keyword, place, or date.

Federated event organizing

Instead of one central event website, Mobilizon is designed around multiple independent websites that can interconnect. That makes it possible for local or thematic groups to run their own instance while still participating in a broader fediverse-style network.

Moderation and interoperability

Mobilizon includes moderation tools for instance administrators and reporting tools for unsolicited content. The project also describes API support, event import and export, standard formats such as ICS and RSS, and internationalization for more than twenty languages.

Strengths and limits

Mobilizon is strong for community-owned event organizing, local calendars, self-hosted group infrastructure, and organizations that do not want their events tied to a large social network. Its limits include instance maintenance, moderation work, discovery challenges, and a smaller ecosystem than mainstream event platforms.

Why it matters

Events are often where online coordination becomes real-world action. Mobilizon matters because it gives communities a way to publish and coordinate events on infrastructure they can choose, govern, and connect with other independent platforms.

WHOIS domain data

Data pulled: May 24, 2026View current WHOIS record

Domain: mobilizon.org
IP address: 176.9.183.74
Registrar: OVH sas
WHOIS server: whois.ovh.com
Referral URL: http://www.ovh.com
Created: October 11, 2018
Updated: March 18, 2025
Expires: October 11, 2026
Nameservers: dns20.ovh.net (5.135.249.213); ns20.ovh.net (5.135.43.97)
Domain status: clientDeleteProhibited; clientTransferProhibited
DNSSEC: signedDelegation
Contact privacy: Registrant name, address, phone, admin contact, and technical contact details are redacted in the visible Who.is record; the visible registrant organization is Kaihuri.

Key concepts

InstanceAn independently operated Mobilizon website with its own policies, events, groups, and administrators.
ActivityA long-running or recurring community item that is broader than a single event.
FederationThe ability for independent Mobilizon websites to connect rather than acting as one central service.

Common uses

Publishing workshops, meetings, actions, talks, festivals, classes, and local events.
Running a community calendar for an association, cooperative, school, city project, or activist group.
Hosting a self-managed event platform with local rules, moderation, and branding.

Common misconceptions

Mobilizon is not one single event platform; mobilizon.org is the project website, while event publishing happens across separate instances.
Federation does not remove moderation or legal responsibilities for instance administrators.
Self-hosting gives groups control, but it also requires maintenance, backups, updates, and operational planning.

Open questions

How can federated event platforms make local discovery easier without centralizing control?
Which organizations benefit most from self-hosted event infrastructure instead of mainstream event sites?
How should event platforms balance privacy, public outreach, moderation, and interoperability?