Yummystreets - Explore street food the locals love
Detour - Immersive audio walks, now in 17 cities
Roaming Hunger - App and site to find any food truck anytime, anyplace.
Sygic Travel Maps - Itinerary planner for independent travelers
The New Forker - An interactive map of restaurants reviewed in The New Yorker
Foursquare 10 - Your ultimate city guide, in your pocket