Ruby on Rails RoR ecommerce
ror_ecommerce is a complete ecommerce platform written completely in Rails 4, and built to scale. ror-e.com's goal is simple... to be a complete small business solution. We will save you time, effort, resources and most of all, money. From Purchase Order system, to the Checkout flow, to Getting returns done correctly, this is a solution that will work with your business.
I only list one example site for security reasons... This is a startup company I started with ror_ecommerce: