Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Peanut - Peanut is a Mobile Application for moms developed and published by Peanut App Ltd.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
We3 - AI that finds you the most compatible people nearby
Bigtent - BigTent is a web-based organization and communication portal for groups.
Tribyo - Discover, connect and interact with people with similar interests.