Splittable - Shared living made simple
/Tab - The simple way to split a bill among friends.
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!
EquiTable - Split the bill fairly
Roomr - Discover great people to live with
Evenfy - A free tool to manage household IOUs with roommates, split bills and track group expenses so that everyone gets paid back. On the web, iPhone, and Android.