AirWander - Add multi-day stopovers to save on flights
Detour - Immersive audio walks, now in 17 cities
Flymble LIVE - Book a flight for 1/10 of the cost upfront.
Sygic Travel Maps - Itinerary planner for independent travelers
Lonely Planet - travel guide book publisher
Foursquare 10 - Your ultimate city guide, in your pocket