It uses MySQL database and HTML components for the development of eCommerce sites. Since OpenCart provides a wide variety of themes and extensions, it becomes easy to build and modify the online store as per preferences. You can use those to customize your e-commerce store in a specific manner or you cannot use them also.OpenCart is a free platform and anyone can download it and go through its code. In comparison to SAAS platforms which are available on a subscription basis and impose many restrictions on the store itself and its development, OpenCart is much better, it has no limits in categories, products, development, customers, and others. People who have many years of experience with PHP and are knowledgeable about the MVC structure can easily get familiar with the matter and start making extensions and modifying topics. But those who are not that experienced still can comfortably work with this platform.