OpnTab VS Luna App

WieBetaaltWat - With WieBetaaltWat you can manage a list with your shared expenses.

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!

Tricount - Manage and share expenses with friends

WhoseBill - WhoseBill takes a new approach to sorting out money with your friends.

SplittyPie - Create event, add users and their expenses.

ihatemoney - Manage your shared expenses, easily