Habitate.io - Build and grow an online community on your website to engage, nurture, and support your customers.
Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
The Backstage Pass - Actionable ways to build a 10K+ member community in a year
Facebook Local - Discover places to go and events happening near you
Hive Index - Discover online communities, across all platforms, for any topic.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets