Google Goggles - Search by taking a picture. Users can point their cell phone cameras at paintings, famous landmarks, barcodes or QR products, or popular images. If Goggle finds it in its database, useful information will be returned.
Perfect World Clock - Provides easy access to the time in hundreds of cities adding several clocks as home screen widgets.
Packing Pro - Enter destination, length of trip and who with and it will provide a list of what you may need.
WhatsApp Messenger - Provides the ability to send data (including pictures, videos, sound clips, and GPS tags as well as text) via Wi-Fi for free to people anywhere in the world.
TripAdvisor - Honest reviews of hotels, restaurants, attractions, and more.
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.
Livingsocial - Find 50% off restaurant offers.
Tripit - Combine all your travel reservations in a single locations.
Instagram - Coverts photos into works of art. Instagram gives photos professional, antiquated, or artistic looks. It makes sharing pictures across social media networks easy.
Seatguru - Shows the best seats on every plane and where power ports are located.
AlpineQuest GPS Hiking - Comprehensive orienteering maps come complete with contour lines.
Passbook - Passbook is an application in Apple’s iOS that allows users to store coupons, boarding passes, event tickets, store cards, generic cards, and other forms of mobile payment.
Schemer - 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.
Touchnote - Send real postcards using cell photos.
The Weather Channel - View current weather, hourly, 36 hour and 10 days forecasts.  Will forecast weather throughout the United States.