CS-Cart is a turnkey shopping cart solution that includes all necessary features to build a successful online Web store. It is ready to use right from the start. With its functionality you can start an ecommerce Web site of any complexity: from a one-product shop to a full-featured online store.
Window Shopper for Firefox allows you to instantly compare prices on any product on 3,200 U.S. online stores, including Amazon and eBay. If it finds a deal, it will show it. Otherwise, it will show you similar products you may also be interested in. After you install Window Shopper, you will see a "See Similar" icon appear next to product images. Just click on the icon and the Window Shopper window will appear, presenting deals and visually similar products from hundreds of online stores.
Saint CMS is a combination CMS and eCommerce package built atop a rapid development framework. It is high performance, easy to use, and provides convenient tools for creating sites with custom content types. It includes a built-in blog, an image gallery, a slideshow, a file manager, a shop with downloadable product options, an event logging system, a WYSIWYG editor, and more.