Ubercart

Damon Cortesi ( @dacort ) over at Untitled Startup recently wrote up a summary of recurring payment services provided for startups. It's a decent analysis of current payment services that offer a hosted recurring billing solution, if you don't have a merchant account or want to handle your own e-commerce. If you're writing a software-as-a-service platform from the ground up, and would like to outsource the payment side of things, these are good options.

Another large scale project by Freelock Computing, the Organic Materials Research Institute tested our abilities to work with a variety of sources and the Drupal system. The project brought their old public facing website built on PHP to the Drupal CMS and is still synced nightly with their internal master database built on Access.

We've built custom shopping carts, as well as implemented several different open source shopping carts, including Zen Cart, OS Commerce, VirtueMart with Joomla, and Ubercart in Drupal. We've also built SOAP servers to allow manufacturers to take orders from distributors. We've built payment gateways for several of these systems, and imported products and images from other content management systems and existing online stores.