Yummystreets - Explore street food the locals love
Detour - Immersive audio walks, now in 17 cities
Street Food Mapper - A web app for searching food trucks in real-time.
Sygic Travel Maps - Itinerary planner for independent travelers
Roaming Hunger - App and site to find any food truck anytime, anyplace.
Foursquare 10 - Your ultimate city guide, in your pocket