TicketHarbor - The safer Craigslist for P2P ticket exchanges
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Up All Night - Concerts and exclusive events for $25 a month
Ticket Tribe - Sell tickets online with no fees per ticket
Sporteventus for iOS - The worldwide search engine for sporting events and tickets
pretix - pretix helps you to sell tickets for your event in an easy way. It supports multi-lingual events and provides a wide range of features