Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Event Finda - Find events near you, and all around the world.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Rally by Eventbrite - Find the best local events and rally your friends to join
Bigtent - BigTent is a web-based organization and communication portal for groups.
SPECTRA Mini - Mini eSkateboard - 9 mph, 6 mi range, 8.5 lbs