Magento
Magento is an eCommerce platform built as an open source solution owned by eBay which handles over $100 billion in gross merchandise volume on an annual basis.
Over 240,000 merchants from all the world rely on Magento’s powerful eCommerce platform and tools.
The platform is supported by a vast global network of 300+ solution and technology partners and by a highly active global community of more than 150,000 developers.
Wordpress & Woocommerce
WordPress is an open-source and free Web publishing application, content management system (CMS) and blogging tool that is built by a community of developers and contributors.
WordPress allows users to build dynamic websites and blogs that may be updated, customized and managed from its back-end CMS.
WordPress is built on PHP, supported by MySQL and integrates with a variety of features and tools used to design, develop and manage websites.
Virtuemart
VirtueMart is an open source e-commerce solution that must be used together with the content management system Joomla!
Both Joomla! and VirtueMart are written in PHP and made for easy use in a PHP / MySQL environment.
Opencart
Opencart is a fast growing and well known opensource e-commerce platform for small and medium sized eCommerce business’s – giving low cost access to e-commerce.
With millions of merchants now using the Open Cart platform, they are viewed as one of the top three open source e-commerce platforms in the world.
It allows merchants to set-up multiple online stores in different languages, all administered through a single account.