TripActions - TripActions is the corporate travel management company that helps you control costs and keep employees happy.
Splitwise - Splitwise is a free tool for friends and roommates to track bills and other shared expenses, so that everyone gets paid back. On the web, iPhone, and Android!
TravelPerk - Corporate Travel Management
Kittysplit - The easiest way of sharing costs with a group of friends
Egencia - Egencia is a corporate travel management system.
ihatemoney - Manage your shared expenses, easily