PartyWith - Connecting people who love to party - anytime, anywhere.
TechEvents.co - Tech and startup events aggregator
Party with a Local - Party with a Local is a free app that connects travelers with locals that want to party.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
MisterJack - Make and share playlists
Facebook Local - Discover places to go and events happening near you