I started some work on a online store today that is using Zen Cart open source e-commerce software to power the store. I love Zen Cart, which initially was branched off of osCommerce, to power online stores and have used Zen Cart or osCommerce to power online stores for going on a decade. The first thing you should always do when beginning work on an already established site is get all of the information about the software(Zen Cart, osCommerce, WordPress, etc.) that runs the web site and the software used to power the site(MySQL, PostgreSQL, Apache, Litespeed, etc.). Zen Cart makes the initial task of obtaining information about the site and some of the server software fairly easy. Use the information below to obtain the Zen Cart version.