Airbnb - Book unique places to stay and things to do.
Attendize Event Ticketing - Attendize is a free & open-source ticket selling and event management platform
Nightout - The standard in event ticketing and marketing by NIGHTOUT
Zoho Backstage - Plan, run, and analyze your event— all from one place
TickPick - Purchase tickets to your favorite events with no hidden fees
Meetup for iOS and Android - Discover groups that are all about the things you love