Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
PartyUP - See videos from the best nightlife venues in your city.
Event Hunt - Startups and Tech Events Curated By Locals
WOOdate - Find, customize, and plan your entire date in one place.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Happenings App - The quickest way to privately share photos between friends.