Owy - Keep track of the things people owe you
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!
Diggsweep - Easily create your own 'garage sale' to share with others
Splittable - Shared living made simple
finch - View your local websites on any internet connected device
EquiTable - Split the bill fairly