Attendize Event Ticketing - Attendize is a free & open-source ticket selling and event management platform
Eventjoy - The Easiest Way To Organize An Event
Iventlist - Create an app for your event in minutes 🎟️
Pogoseat - Pioneers of the in-event seat upgrade technology and Text-to-Buy mobile ticketing soltutions.
TechEvents.co - Tech and startup events aggregator
Meetup for iOS and Android - Discover groups that are all about the things you love