zen-cart, an open source eCommerce software

Zen Cart® truly is the art of e-commerce; free, user-friendly, open source shopping cart software. It is PHP-based, using a MySQL database and HTML components. Support is provided for numerous languages and currencies. Zen-cart can be downloaded from:
http://www.zen-cart.com/

List of free and open source eCommerce software, from http://en.wikipedia.org

This is a list of notable eCommerce software which is free and open source software.

Software Name	Written in	Database	License	Current stable version	First release date	Latest release date
Arcavias	PHP	serveral, primarily MySQL	LGPL	2012-05	2012-04-27	2012-02-29[1]
Batavi	PHP	MySQL	GNU General Public License	1.2.1		2012-01-18[2]
Bigfish	Java	several	Open Software License		2011-08-31	2012-05-07[3]
Broadleaf Commerce	Java	several	Apache License 2.0	1.5.4		2012-02-21
Bots (edi)	Python	N/A	GNU General Public License	2.1.0		2012-01-02
Interchange	Perl	several	GNU General Public License	5.6.3		2010-03-24[4]
Magento	PHP	MySQL	Open Software License	1.7.0.0	2007-08-31	2012-04-24[5]
nopCommerce	ASP.NET MVC	MS SQL	Mozilla Public License	2.30		2011-11-19
OFBiz	Java	several	Apache License 2.0	10.04		2011-01-19
osCommerce	PHP	MySQL	GNU General Public License	3.0.2	2000	2011-08-06[6]
osCMax	PHP	MySQL	GNU General Public License	2.5.0[7]		2012-02-20
PrestaShop	PHP	MySQL	OSL Ver. 3 / AFL Ver. 3	1.4.8.2	2007	2012-05-14[8]
Ubercart	PHP	MySQL	GNU General Public License	3.0		2012-02-01[9]
Zen Cart	PHP	MySQL	GNU General Public License	1.5.0	2003, osCommerce fork	2011-12-31[10