Short Reckonings is a free Web tool that helps you track and even out group expenses. Enter a group of people and a list of expenses, indicating who paid how much for what and for whom. Short Reckonings calculates the fewest number of payments needed to reconcile the debts. An ideal solution if you have to deal with the expenses for several roommates, travel buddies, coworkers or family members.
No need to register. Friendly and fast user interface.