Virto Commerce is the only enterprise level e-commerce product fully available under Open Source license. Virto Commerce is based on .NET 4.5 with extensive use of MVC, IoC, EF, AngularJS, Liquid and many other cutting edge technologies. The product can easily handle millions of products and has the following features: master & virtual catalogs, separate price lists, multiple stores, advanced template engine, dynamic marketing content, fulfillment centers, multiple product types (product, variation, bundle, package, dynamic kit), returns and exchanges and many more.