The best open source eCommerce explained in here.

About AbanteCart

AbanteCart is a free open source ecommerce platform to power online retail. AbanteCart is a ready to run web application as well as reliable foundation to build custom eCommerce solutions.
AbanteCart ecommerce platform is designed to fit a wide variety of online businesses, as well as can be configured or customized to perform very specific business requirements. Chosen by many shop owners launching their business online for the first time, AbanteCart is also picked by developers looking for a user-friendly interface and powerful features set.

AbanteCart Documentation

This site serves as a main official AbanteCart documentations resource for users managing and developing with AbanteCart. Documentation site covers many aspects involved with setting up your web store, managing it with day to day activity, as well as developer oriented manuals.
Documentation walks you through the sections of the administration interface and provide solutions and hints to most functional areas of your ecommerce. You will be able to understand how your AbanteCart works and what each section is responsible for, how you can modify and setup the administration side to meet your business needs. Here you can find details on adding products to your store, keeping track of sales, managing customers, customizing texts, changing storefront design, adding extensions, and much more.
After reading this manual, you will be very comfortable with using the AbanteCart to set up your online shop and maintain it over time. If you are developer you will be ready to code with AbanteCart and develop extensions for your site or your customers.

Users

Learn how to manage AbanteCart and get most features out of our eCommerce platform

User Manual

Developers

Learn AbanteCart architecture and how to code with it and develop new extensions.

Developer Manual

More help

There is more help available on AbanteCart forum and community of developers and users like yourself. Feel free to visit, post questions and help others. AbanteCart Forum