Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
OpenCirclez - Share local activities and events with friends nearby.
Facebook Local - Discover places to go and events happening near you
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Far or Near - Far or Near™ is a privacy-oriented social network that helps you connect with others who share your...
TechEvents.co - Tech and startup events aggregator