OpnTab
OpnTab moves IOUs from your memory and post its to the cloud.
9 Alternatives To OpnTab
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.
Kittysplit
The easiest way of sharing costs with a group of friends
Omi
Omi makes it easy to split bills with friends and keep a running balance.
Splittr
Splittr helps you to split group expenses and is so easy to use.
SplittyPie
Create event, add users and their 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
WieBetaaltWat
With WieBetaaltWat you can manage a list with your shared expenses.
ihatemoney
Manage your shared expenses, easily