WooCommerce - A freely available eCommerce plugin that enables shop facilities on your WordPress website. Functionality enabling extensions & beautiful themes available.
Metorik - Your online store's co-pilot (for WooCommerce)
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.
ConvertCart - Skyrocket your eCommerce conversion with all in one Conversion Rate Optimization suite from Convert Cart.
Shopify - Shopify is a powerful ecommerce platform that includes everything you need to create an online store and sell online. Try it free for 14 days.
Metrilo - Running a data-driven online store is now easy. See what people do on your online store, step by step. Learn what makes people buy. Optimize acquisition channels and metrics. All in one truly simple product.