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Schemer - Google’s test crowd sourced travel guide.  Users leave recommendations for things to do in their city and visitors can add to a to do list and check off as they go.
Wi-Fi FInder - Directions to your nearest source of wireless internet. Comes with an offline mode so that users can download maps.
iMuseum - A web tracker that searches via GPS the closest museums in your immediate area. Updates museum news and exhibition info regularly.
AlpineQuest GPS Hiking - Comprehensive orienteering maps come complete with contour lines.
TravelSafe - A database of emergency service and embassy phone numbers for almost every country.
RoadNinja - Always know what is coming up at the next exit and compare gas prices at upcoming exits.
Trip Journal - This virtual travel scrapbook will also create maps of your various explorations as long as your GPS in turned on, geo tagged with pictures, videos, and notes.
Packing Pro - Enter destination, length of trip and who with and it will provide a list of what you may need.
Opentable - Reserve tables and earn rewards at over 20,000 U.S. restaurants.
BestParking - Steers drivers toward the cheapest and most convenient garages and lots in 100 cities and 115 airports throughout North America.
Foodspotting - Focuses on specific dishes with user generated recommendations.
Livingsocial - Find 50% off restaurant offers.
Perfect World Clock - Provides easy access to the time in hundreds of cities adding several clocks as home screen widgets.
MoneyPass - Access locations of over 20,000 surcharge free ATMs either by entering an address, a zip code, or using your current location. 
Evernote - Take notes, capture photos, create to do lists, record voice reminders, and make these notes completely searchable. Users can combine and share travel notes.