OpenCart is a free, open-source e-commerce platform built on PHP/MVC architecture, offering a robust and customizable foundation without monthly fees.

It is well-suited for both beginners and seasoned developers, providing capabilities such as unlimited products, multi-store management, SEO-ready infrastructure, comprehensive order handling, shipping and payment integrations, and a wide array of extensions.

OpenCart balances affordability and flexibility, making it an appealing choice for those who want full control over their online store without relying on proprietary systems.