phpShop - A free online shop which includes a modular system, easy management, featured items, and searching. Fish Cart - An open source catalog management system. Includes multi-lingual support, customer information tracking, close out items, audio or video clips for products, and encryption. Clover Shop - An online store which features a product catalog, shopping cart, orders and administration page. Databases are flat text files and its can edit them through web browser or off-line in a text editor. [Commercial] Shop-Script - Application includes credit card processing, template-based design, and compatibility with mySQL, MS SQL, and Interbase. Online order. Zen Cart - A user-friendly PHP-based shopping cart system. [Open source, GPL] PHP Invoice - A PHP/MySQL-based account and automated invoice management program. It supports automated billing through Paysystems, 2Checkout, Worldpay, Paypal, and custom payment gateway. Features: Support Tax, Pro-rated billing, revenue reports. [Commercial] Associate-O-Matic - Build and customize a complete Amazon.com Associate Store. [Commercial] PHP eSeller - An application for selling digital goods via PayPal and IPN (instant payment notification) and with Google Checkout. [Commercial] 5th Avenue Software - A template-driven customizable PHP shopping cart utilizing MySQL or PostgreSQL. Interfaces with numerous payment, tax, and freight methods. [Shareware] aMember - Script to setup paid membership on a site with PayPal/Clickbank support. [Commercial, trial version] ViArt - A shopping cart supporting MySQL and PostgreSQL databases and includes support for ODBC connections. Different versions, online demo, and news. [Shareware] RapidShop - Shopping cart software for small and medium business. BAV - Bank Account Validator - Classes for bank account validation. It may be easily integrated into an existing project. At the moment only (but all) German bank accounts are supported. [Open source, GPL] Magento - Shopping cart software with wide community. Documentation, forums, community-powered plugins. [Commercial, Opensource] CRE Loaded - PCI compliant shopping cart. Comes with number of shipping and payment modules, B2B functionality. Was originally built from osCommerce. [Commercial, Opensource GPL] OpenCart - Freeware shopping cart system. Contributions, documentation, community forums. [Opensource, GPL] OpenBazar FreeSHOP - Freeware MySQL powered script for ecommerce. Includes affiliate functionality, guestbook, automatic image resizing and other modules. [Opensource] ClickCartPro - E-commerce shopping cart solution. By Kryptronic. [Commercial] EncapsGallery - Basic shopping cart script with PayPal integration. Free for personal use.