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!
Klarna - Klarna provides e-commerce payment solutions for merchants and shoppers.
Kittysplit - The easiest way of sharing costs with a group of friends
Sezzle - Sezzle is a digital payment platform designed to help shoppers manage their financial futures with great ease.
ihatemoney - Manage your shared expenses, easily
PayPal Credit - PayPal Credit provides financing options to businesses.