5coins - A simple app to track your daily expenses
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!
Freework - An easy way to keep track of your daily work
Kittysplit - The easiest way of sharing costs with a group of friends
QuickBudget - Quickly review your monthly expenses. Free and 100% private!
ihatemoney - Manage your shared expenses, easily