osCommerce is a free, open source online shop software. The default installation includes a large number of features that you can easily enable and configure. You can easily install osCommerce on your website with the help of the Fantastico auto-installer.
With osCommerce shopping cart you can add multiple products on your site, organize them in categories, set discounts and special promotions. osCommerce allows you to accept all popular payment methods: PayPal, credit cards, cheques. osCommerce has a built-in shipping and tax functionalities.
It also supports multiple currencies, allows customers to print invoices …