TripIt - TripIt is a travel app that creates a master itinerary to organize all of your plans for your vacation or work trip in one spot.
Concur - Automated travel and expense management - your employees, travel managers and finance, too.
App in the Air - The perfect companion for everyone taking a flight.
Certify - Travel and Expense Report Management Software
furkot - Always wanted to travel across US but were not sure if you have enough time for that?
Egencia - Egencia is a corporate travel management system.