Penny - Penny is a personal finance app that takes the pain out of keeping track of your finances.
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!
Honeydue - The simplest way to manage money, together
Tricount - Manage and share expenses with friends
Spendee - See where your money goes
Splittable - Shared living made simple