Attendize Event Ticketing - Attendize is a free & open-source ticket selling and event management platform
Red Tricycle - Find Great Family Activities
Zoho Backstage - Plan, run, and analyze your event— all from one place
Facebook Local - Discover places to go and events happening near you
Meetup for iOS and Android - Discover groups that are all about the things you love
Winnie - Great activities and destinations for families