osCommerce

osCommerce is a full-featured, open-source shopping cart application.This robust application is packed with all the features needed to create a successful web store. It completely allows store owners to maintain their online stores with minimum effort and with
absolutely no costs or license fees involved.

osCommerce combines open-source solutions to provide a free and open e-commerce platform, which includes the powerful PHP web scripting language, the stable Apache web server, and the fast MySQL database server.

osCommerce Features:

* It comes with web based installation and upgrade procedure, which makes it easier for owner to install.
* It supports design template dynamic images as well.
* For backend which is secure with username and password, it supports unlimited products, categories, manufacturers,
customers and product reviews online.
* It also provides detailed statistics about products, customers etc. with multilingual and multicurrency support.
* It is possible to integrate the 3rd party payment gateway in this. Gateways like 2checkout, authorize.net, Paypal etc.
could be integrated easily.
* Support for SSL (Secure Sockets Layer) for safe transactions.
* 3rd party design template integration (this also gives a free hand to change the static site to dynamic
one as design style could be utilized)