phpShop is an electronic commerce package written in PHP. The goal of phpShop is to create a system capable of performing all of the functions needed to do business online. Some of its key features include: Web-based Administration with Vendor Maintenance, Product Maintenance, User/Shopper Maintenance, Order Maintenance, Function Register, and Directory Register, Cybercash payment processing capability, Database encryption of sensitive data for security, and Flexible store building.

osCommerce is an open source e-commerce solution under on going development by the open source community. Its feature packed out-of-the-box installation allows store owners to setup, run, and maintain their online stores with minimum effort and with no costs involved. osCommerce combines open source solutions to provide a free and open development platform, which includes the powerful PHP web scripting language, the stable Apache web server, and the fast MySQL database server. With no restrictions or special requirements, osCommerce is able to run on any PHP3 or PHP4 enabled web server, on any environment that PHP and MySQL supports, which includes Linux, Solaris, BSD, Windows, and MacOS-X environments.

PHPCatalog is an easy to use, yet comprehensive online catalog solution. It can be easily used as an "out of the box" catalog tool, or as a catalog engine which can be custom-configured into any format imaginable. HTML templates are used for easy integration into your site. The pages are optimized to be picked up by search engines. An unlimited number of categories is supported. It easily integrates with a shopping cart module for full shopping capabilities.

MyCart is a collection of PHP scripts that setup the backbone of a shopping cart or on-line ordering system. Since it uses PHP and MySQL, MyCart is a lot faster than "traditional" shopping carts.

Caupo Shop is an open source e-Commerce shopping cart system for an Apache server with PHP and MySQL database support. Features include: Search engine function, Category-based, Web-based administration, Cookie-based session tracking, Thumbnail image display, File upload support, Detailed statistics, off-line product editor (MS Access), and more.

MyMarket is a PHP4/MySQL-driven e-commerce system based on the tutorial, "Building an E-Commerce Site" by DevShed. Some of its main features include: Product Catalog, Shopping Cart, Payment Processing, and more. It is highly recommended that you read the tutorial which takes you through every step of the application building process.

Squirrelcart is a PHP / MySQL e-commerce system. It is a fully customizable, robust shopping cart, designed with the advanced developer and web novice in mind. All products, categories, customers, shipping options, payment options, orders, and every other detail within the cart are stored in a MySQL database. Slick admin interface with "Windows like" drop down menus for real application feel. Support for themes. Supports SSL. Fully customizable via templates. Supports Authorize.net, 2Checkout.com, PsiGate, PayPal, and many other payment gateways. Supports live rate lookups via UPS OnLine Tools and USPS web tools. Inventory Control feature to keep track of your stock. Automatically generate different sized product images based on a single image upload. Rotate, mirror, flip, crop, and resize images via advanced image features. Support for an unlimited number of products and categories. Order Management allows customer to view their orders and merchant to manage them. Many other features!

X-Cart can be used both as a ready out-of-the-box shopping cart solution and powerful shopping cart engine for a customized web shop. X-Cart is based on Smarty PHP template engine and MySQL database server. X-Cart features online credit card processing, product options, inventory tracking, affiliate program, real-time shipment tracking, orders history, tax and shipping rates calculation, powerful admin backoffice, built-in web-based template editor, database backup/restore and more. X-Cart is optimized for smooth performance and clear look. Very easy to install via user-friendly web installation wizard.

FreeTrade is an Open Source e-commerce package implemented in PHP that uses MySQL on backend. Features include: Administration Interface to add products to the database, Edit existing products, Edit cross-selling information for products, Add promotion/discount offers, Generate customer leads reports, and Generate reports on orders; Product Information Pages including product description, product picture, cross-sell links, Adding product to shopping cart, etc; Support for Localities, Auctions may be created and managed by the system and more.

BugMall Shopping Cart includes everything you need to create, run, and manage a profitable online store. BugMall Shopping Cart is a Web Commerce infrastructure you can outsource, one that lets you focus on the things you really need to. It is highly customizable yet easy-to-use web site content management system with sophisticated transaction management capability. BugMall Shopping Cart helps growing businesses boost their bottom line with easy-to-use features.