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!
Olivia - Your new best friend built with an artificial neural network
Splittable - Shared living made simple
Digit - SMS bot that monitors your bank account & saves you money
EquiTable - Split the bill fairly
Spendee - See where your money goes