Event Tickets allows your visitors to RSVP and buy tickets to events
Bridge plugin for adding Name Your Price support
Event Espresso 4 Core for WordPress: Build an Event Ticketing Website
Run your own Events business with Eventmie
Build and make a full ticketing support system
Generate calendars in the iCalendar format
Manage events on a Google Calendar
Quality based Open Source Project Organiser.
Web Online Registration and Payment System for Events
Event tickets for SilverStripe and Event Calendar
Register & manage church or event members' info in a simplified way
Self-hosted multi-organization event management Laravel package
Create a dedicated platform for Event Planning with Laravel for Free
Non-profit management
EduSec is now available on Cloud with LMS integrated
ShelterOps - Animal and Wildlife data management software
Open source membership software.
GLPI Web API Notifications
a web based event registration system
Calanda 0.8 beta. Update to Calanda 0.7
Uniwits Online Reservation System