Detour - Immersive audio walks, now in 17 cities
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Sygic Travel Maps - Itinerary planner for independent travelers
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
Foursquare 10 - Your ultimate city guide, in your pocket
Ticket Tribe - Sell tickets online with no fees per ticket