CardSpring

CardSpring is a payments infrastructure company that enables developers to add applications to the payment network. The CardSpring web service API makes it easy for payment companies and point-of-sale vendors to work with developers to create card-linked services that help merchants connect with their customers and grow their business. CardSpring recently launched CardSpring Connect, a new service that brings the power of mobile and internet performance marketing and analytics tools to local merchants' existing POS. Connect makes it easy for local merchants to work with leading publishers to create online-to-offline promotions that drive new customers, repeat business, and greater spend to their stores. Headquartered in San Francisco, California, CardSpring is funded by Accel Partners and Greylock Partners.