Ohio Valley Ag was an example of extending an open-source shopping cart with a secure, custom content management system, an example of how we can extend open-source software to meet a business need. This solution was eventually outgrown, splitting the shopping cart off into its own site Agrimart.net, and the CMS was then migrated to WordPress. Even then, we did some custom programming to allowing online quoting and secure credit card processing inside of the WordPress framework.