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!
Kittysplit - The easiest way of sharing costs with a group of friends
SplittyPie - Create event, add users and their expenses.
Tricount - Manage and share expenses with friends
WieBetaaltWat - With WieBetaaltWat you can manage a list with your shared expenses.
Mint - Free personal finance software to assist you to manage your money, financial planning, and budget planning tools. Achieve your financial goals with Mint.