Nutrisystem, headquartered in Fort Washington, Pennsylvania, is a commercial provider of weight loss products and services. Initially, the company offered weight loss counseling and products in brick and mortar centers. In 1999, the company moved to a direct-to-consumer business model, selling its products and programs on the Internet and through a call center via 1-800 numbers. Nutrisystem’s programs have been sold on the QVC television home shopping network since 2001 and in Costco stores since 2009. The company entered the retail arena in 2012 with the launch of its "Everyday" line of breakfast and snack items in Kroger grocery stores. In 2013, Nutrisystem began selling its five-day "Jumpstart" line in Walmart stores. In 2010, the company's mobile platform was launched amidst allegations that Nutrisystem had stolen the technology from WebDiet, Inc., a Silicon Valley startup.