Attendize Event Ticketing - Attendize is a free & open-source ticket selling and event management platform
Laylo - Create fan reminders for events, content, and merch
Iventlist - Create an app for your event in minutes 🎟️
TechEvents.co - Tech and startup events aggregator
Zoho Backstage - Plan, run, and analyze your event— all from one place
Meetup for iOS and Android - Discover groups that are all about the things you love