VirtueMart - VirtueMart is an open source e-commerce solution designed as an extension of the Mambo or Joomla!

Sell.app - Sell.app is the easiest way to sell digital products online. Spin up your own storefront in just a few minutes and start selling instantly.

PrestaShop - Create your online store with PrestaShop's free shopping cart software. Build an ecommerce website for free and start selling online with hundreds of powerful features.

Shoppy - Automatically get order notifications & summaries in Slack

Shopping feed - Shopping feed is a versatile eCommerce application that allows eCommerce stores to thousands of channels.

WooCommerce - A freely available eCommerce plugin that enables shop facilities on your WordPress website. Functionality enabling extensions & beautiful themes available.