Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Calendify - Calendify is an event community where you can share, publish, and subscribe to event calendars. It helps you to stay informed about what you are interested in and what is yet to come.
Event Hunt - Startups and Tech Events Curated By Locals
PartyWith - Connecting people who love to party - anytime, anywhere.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Soulpicks - Discover places loved by friends and experts