Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Party with a Local - Party with a Local is a free app that connects travelers with locals that want to party.
Cvent - Cvent's event management software provides event planners with a complete solution to increase event attendance and decrease event costs.
Babble - A more personalized social network
Ticket Tailor - Ticket Tailor is an easy-to-use event ticketing platform that allows event organizers of all shapes and sizes to sell tickets online.
Palaround - Meet people you should be friends with.