Digit - SMS bot that monitors your bank account & saves you money
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!
Penny - Penny is a personal finance app that takes the pain out of keeping track of your finances.
Kittysplit - The easiest way of sharing costs with a group of friends
Qapital - Qapital is an easy to use Finance application that allows you to save money automatically and take control of your spending.
ihatemoney - Manage your shared expenses, easily