Party with a Local - Party with a Local is a free app that connects travelers with locals that want to party.
TechEvents.co - Tech and startup events aggregator
FB Nearby Friends - Discover which Facebook friends are nearby or on the go
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Facebook Local - Discover places to go and events happening near you
VentureStorm - Intelligent platform to connect startups and developers