• Design / Layout
  • 25 free themes
  • 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
  • Contact customers directly via email or newsletters
  • 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 (2CheckOut, PayPal, 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 basis

Note: This page taken from oscommerce.com