OpenCart is a highly customizable open source ecommerce platform. It has a robust administrator dashboard that gives you an at-a-glance view of important metrics like sales, customers, and more.
OpenCart lets you stay on top of different stores from a single interface. This functionality lets you set products for different stores, use specific themes for each online store, and localise your websites. Product options and attributes are also quite flexible with OpenCart, and the solution lets you add extra product variables.