spreecommerce a.k.a Spree is one of the first open source e-commerce solution based on Ruby on Rails. The development was started by sean schofield in 2007 and contributed by over 700 developers. More than 45,000 retailer choose Spree as their e-commerce platform.
Spreecommerce is fully customizable. Spree extensions provides convenient, reusable and sharable way to modify or extend Spreecommerce. A Spreecommerce developer can either choose to use an existing extension to customize desired spree feature or can create his own extension and share with community. There are hundreds of extensions already available.