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!
Pry Financials - Finance for Founders
EquiTable - Split the bill fairly
Fly Cash - Expense tracking as easy as chatting
Splittable - Shared living made simple
Birdly - Birdly is an expense management and expense report solution for SMBs.