X-Cart is a commercial open-source e-commerce platform that allows businesses to create online stores and sell products online. It was first released in 2001 and is built using PHP and MySQL. X-Cart is highly customizable, with a modular architecture that allows for easy installation of various add-ons and features. It offers a wide range of built-in marketing and SEO tools, and is also mobile-friendly. X-Cart offers both a self-hosted version that can be installed on a web server and a cloud-based version, X-Cart Cloud.