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.
TechEvents.co - Tech and startup events aggregator
Discotech - Opentable for nightlife. Tickets, guest lists, and VIP.
Facebook Local - Discover places to go and events happening near you
clubbookers - Looking for the best night clubs in the world? Book your VIP table at the top night life venues on the globe through Club Bookers.