Free and open source PHP e-Commerce solution. Very easy to customize, including integration with Firebug CSS editor that enables real-time CSS editing. Powerful business rule system. Attribute based layered product navigation. Customer convenience features - wishlists; one page checkout; account area for tracking orders; customer support system and more. Downloadable products. Integrated payment processing and live shipping rate lookups. Very powerful and easy to use admin backend, which is AJAX powered. Custom product attributes per category. Product and order batch processing. Flexible shipping rate configuration. Multiple shipments per order. Accept offline/phone orders. Completely customizable. Many configurable options. Multi-language and multi-currency. SEO friendly and XHTML/CSS valid pages. Developer friendly. Clean MVC architecture based code base. Extensible with plugins and modules. Complete database import from other carts and CSV files.