Perusion and Interchange have more than a few things in common.
Back in 1995, before the web was a daily presence in most people's lives, Mike Heins was already busy shaping an application that would not only survive, but thrive for years to come. This application, Interchange, has powered many e-commerce websites, and has helped online stores process hundrds of millions, if not billions, of dollars of orders since then.
Having stood the test of time, while so many e-commerce applications have come and gone, the free and opensource Interchange software is now maintained by a global development community.
If you've been considering Magento, Shopify, BigCommerce, osCommerce, or 1ShoppingCart to power your e-commerce website (or if you are already use one of these and are disappointed by slowness and poor customization abilities), you should evaluate Interchange. If you've been thinking of building a system by hand in Python, ASP, PHP, Ruby, Rails, or any other environment, you should consider the time savings that building on the Interchange platform may bring you.
Interchange is well-suited for a variety of purposes, including sales, order processing, content management, customer service, reporting and analysis, and personalization. Interchange has been implemented for traditional retail sales, digital goods delivery, B2B parts re-ordering, content management, auctions, supply chain management, project management, online collaboration, and more. Interchange can be used as a completely self-contained standalone product or as part of a larger system. It can be integrated with payment processing services, ERP systems, point-of-sale systems, accounting systems, external content management systems, customer relationship management systems, email campaign management systems, and remote databases on virtually any platform.
Some of Interchange's many modules are transaction management, pricing, personalization, payment processing, reporting, customer service, and search. If you need functionality that Interchange doesn't yet provide, you can always build it yourself or have Perusion do it for you.