Wildcard - Discover, connect and meet people at communities
Attendize Event Ticketing - Attendize is a free & open-source ticket selling and event management platform
GetReal - Meet new people, in person
Zoho Backstage - Plan, run, and analyze your event— all from one place
Event Hunt - Startups and Tech Events Curated By Locals
Meetup for iOS and Android - Discover groups that are all about the things you love