Oscommerce

osCommerce Online Merchant is a complete online store solution that contains both a catalog frontend and an administration tool backend which can be easily installed and configured over a web-based installation procedure.

Features

Although osCommerce is still in its development stage, the available Milestone releases are considered to be stable with the following features:
General Functionality
Compatible with all PHP 4 versions
All features enabled by default for a complete out-of-the-box solution
Object oriented backend (3.0)
Completely multilingual with English, German, and Spanish provided by default
Setup / Installation
Automatic web-browser based installation and upgrade procedure
Design / Layout
emplate struture implementation to:
allow layout changes to be adaptive, easy, and quickly to make (3.0)
allow easy integration into an existing site (3.0)
Support for dynamic images
Administration / Backend Functionality
Supports unlimited products and categories
Products-to-categories structure
Categories-to-categories structure
Add/Edit/Remove categories, products, manufacturers, customers, and reviews
Support for physical (shippable) and virtual (downloadable) products
Administration area secured with a username and password defined during installation
Contact customers directly via email or newsletters
Easily backup and restore the database
Print invoices and packaging lists from the order screen
Statistics for products and customers
Multilingual support
Multicurrency support
Automatically update currency exchange rates
Select what to display, and in what order, in the product listing page
Support for static and dynamic banners with full statistics
Customer / Frontend Functionality
All orders stored in the database for fast and efficient retrieval
Customers can view their order history and order statuses
Customers can maintain their accounts
Addressbook for multiple shipping and billing addresses
Temporary shopping cart for guests and permanent shopping cart for customers
Fast and friendly quick search and advanced search features
Product reviews for an interactive shopping experience
Forseen checkout procedure
Secure transactions with SSL
Number of products in each category can be shown or hidden
Global and per-category bestseller lists
Display what other customers have ordered with the current product shown
Breadcrumb trail for easy site navigation
Product Functionality
Dynamic product attributes relationship
HTML based product descriptions
Automated display of specials
Control if out of stock products can still be shown and are available for purchase
Customers can subscribe to products to receive related emails/newsletters
Payment Functionality
Accept numerous offline payment processing (cheque, money orders, offline credit care processing, ..)
Accept numerous online payment processing (PayPal, 2CheckOut, Authorize.net, iPayment, ..)
Disable certain payment services based on a zone basis
Shipping Functionality
Weight, price, and destination based shipping modules
Real-time quotes available (UPS, USPS, FedEx, ..)
Free shipping based on amount and destination
Disable certain shipping services based on a zone basis
Tax Functionality
Flexible tax implementation on a state and country basis
Set different tax rates for different products
Charge tax on shipping on a per shipping service basi
Payment Gateways: