Opt-cart is specially designed as an extendible and customizable solution, suitable for various types of e-shops. It has a modular structure and consists of the engine + several tightly integrated components in a streamlined system and accompanied with a uniform GUI console.

Opt-cart has the following features:

• multi domain mode, allowing creation of several shops with a central shopping database, for example: affiliate shops
• flexible rights delegation to shop administrators
• the ability to define list of categories and products on a per shop basis
• a catalogue manager that allows you to create trees of categories of products
• the lists of product properties and attributes are dynamically defined
• products, product properties and attributes are managed on-line
• products can be loaded and updated from external systems
• descriptions of products in HTML format are edited on-line using WYSIWYG integrated tools
• lists of related products and compatible products can be defined
• tiered product pricing is supported
• dynamic languages are supported for interfaces, messages and labels
• dynamic currencies are supported
• currency rates can be managed on-line
• different currencies for different shops is supported
• automatic currency conversion on price display and on checkout
• central secure subsystem for client registration and payment processing for different shops
• sensitive data transmission protection using SSL protocol
• quick client registration
• password regeneration procedure for lost client's passwords
• support for different delivery addresses
• order tracking in real-time
• customers can track their own orders on-line
• various non-electronic payment methods are supported: by fax, by mail, by phone
• various on-line electronic payment systems are supported
• ability to plug-in additional payment gateways
• different tax rates are supported for different regions
• integration with delivery systems
• templates are used widely to provide flexibility in look-and-feel customization for different shops
• stock management: low stock notification, scheduling and accounting stock refill
• invoices, shipment documents and reports are produced in printable PDF format
• bar-codes for automated order processing
• commission management for affiliate shops and referrals; partners have access to their commission reports
• clients can leave testimonials for products acquired
• centralized site content management: news, FAQ, plain pages
• quick full-text site search
• extended search by product's attributes
• the system can be deployed on typical shared hosting