Opencart is the best FREE and open-source eCommerce platform. Everything you need to create, scale and run your business. 

This module connects Odoo and Opencart together. When an order arrives at Opencart, the Odoo will automatically upload it. 

The module allows the creation and tracking of leads in the CRM and synchronization of order statuses, import: products, categories, orders, taxes, statistics, notifications, and more. The connector will expand the capabilities of Opencart and allow your business to grow. If you have several Opencart shops you can easily connect and manage them by creating several instances