PrestaShop!

OpenCart is an open source PHP-based online shopping cart system. A robust e-commerce solution for Internet merchants with the ability to create their own online business and participate in e-commerce at a minimal cost.

Buy and sell handmade or vintage items, art and supplies on Etsy, the worlds most vibrant handmade marketplace. Share stories through millions of items from around the world.

Create your own online store with Shopify and start selling today.

Sylius is the first framework for tailored business solutions.

JumpSeller makes it very easy for anyone to start selling online. Just upload your catalog, set up your payments account and shipping costs and you are ready to go.

osCommerce Online Merchant is an Open Source online shop e-commerce solution that is available for free under the GNU General Public License. It features a rich set of out-of-the-box online shopping cart functionality that allows store owners to setup, run, and maintain online stores with minimum effort and with no costs, fees, or limitations involved.

Yo!Kart is a multivendor system meant to launch online marketplace where customers can buy products from various vendors. It is most popular among world startups for offering value to small businesses with low investment. New businesses can opt for ready-made website built on Yo!Kart as it is cost effective and fits in with their budget too. For building a bigger multi-vendor or multi store website, one can opt for custom solutions offered by Yo!Kart.

* Content-DrivenDrupal Commerce is the only commerce platform built upon an enterprise CMS. It connects content and products seamlessly to drive online sales and influence offline sales through a rich user experience, optimized merchandising tools, and proven SEO tools.

Arastta is the next generation of eCommerce software built with modern technologies such as Symfony, MVC, Bootstrap, jQuery, Swift Mailer etc. Thanks to it's modular and lightweight structure, Arastta provides an awesome marketplace for theme and extension developers.

Zen Cart™ truly is the art of e-commerce; free, user-friendly, open source shopping cart software. The ecommerce web site design program is being developed by a group of like-minded shop owners, programmers, designers, and consultants that think ecommerce web design could be and should be done differently.