OSEM (Open Source Event Manager) is a PHP‑based platform for managing conferences, workshops and meet‑ups. Below is a curated list of 20 free (open‑source or free‑tier) event‑management solutions that can be used as alternatives.
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Self‑hosted, open‑source ticketing & event management system built with Laravel. Supports multiple organizers, payment gateways, and customizable email templates.
Full‑stack open‑source event platform (Node.js & React) for creating conferences, handling registrations, schedules, and speaker management.
A fork of OpenEvent offering a modern UI, multi‑event support, and easy deployment via Docker. Includes ticketing, QR code check‑in, and analytics.
Open‑source ticket sales and event registration platform with powerful add‑ons, payment integrations, and a robust API.
Part of the Odoo ERP suite; free community edition lets you create events, sell tickets, manage attendees, and integrate with CRM and accounting.
Open‑source CRM extension that includes event creation, registration, participant tracking, and automated communications.
Free core plugin for WordPress that handles event registration, ticketing, and basic attendee management.
Popular free WordPress plugin for creating and managing events, with calendar views, recurring events, and basic RSVP.
Free WordPress plugin offering event registration, ticketing, and calendar integration with customizable forms.
Free tier for community groups to create events, manage RSVPs, and communicate with members.
Built‑in event creation tool on Facebook; free, with RSVP tracking, reminders, and easy sharing.
Combine free Google Forms for registrations with Google Calendar for scheduling and reminders.
Free tier for up to 100 guests, offering custom RSVP forms, email notifications, and basic analytics.
No‑fee ticketing for events that are free to attend; includes simple checkout, QR code tickets, and integration with WordPress.
Free plan for small events (up to 100 attendees) with online registration, payment processing, and basic reporting.
Zero‑cost ticketing for free events; provides event pages, RSVP, and QR‑code check‑in.
Free tier allows unlimited public events with registration forms, email reminders, and simple analytics.
Free app for sports clubs and community groups to schedule events, collect RSVPs, and send push notifications.
No‑fee ticketing for events that are free to attend; includes event pages, RSVP tracking, and basic promotion tools.
Free plan for events with up to 50 tickets; offers registration forms, email confirmations, and simple reporting.