Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
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
Facebook Local - Discover places to go and events happening near you
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets