TicketHarbor - The safer Craigslist for P2P ticket exchanges
Event Hunt - Startups and Tech Events Curated By Locals
Up All Night - Concerts and exclusive events for $25 a month
Eventjoy - The Easiest Way To Organize An Event
Sporteventus for iOS - The worldwide search engine for sporting events and tickets
Facebook Local - Discover places to go and events happening near you