The Free / Libre / Open Source Web App with the most built-in features
Web site Content Management System using front-end Administration
opensource and free b2b script
Zen Cart® is a free full-featured self-hosted e-commerce application
Built for enterprise level and highly customized websites
Feature rich insurance quote & buy system for underwriters and brokers
Phoca Cart is e-commerce extension - powerful shopping cart for Joomla
Open source ecommerce software based on ASP.NET Core and MongoDB
Powerfull Web Application Firewall for PHP
E-Commerce Shopping Cart
A Ecommerce System
Use amazon's website to shop at your favourite local book shop.
KonaKart Java eCommerce