TripActions - TripActions is the corporate travel management company that helps you control costs and keep employees happy.
Concur - Automated travel and expense management - your employees, travel managers and finance, too.
TravelPerk - Corporate Travel Management
Certify - Travel and Expense Report Management Software
Egencia - Egencia is a corporate travel management system.
Traxo - Traxo is a online travel tool that helps users automatically create and keep travel itinerary up-to-date.