Shopping Carts
Commercial Carts
EROL UK http://www.brightscapesolutions.co.uk/
LimeLight CRM http://www.limelightcrm.com/
UltraCart E-Commerce Solutions http://www.ultracart.com/
support@ultracart.com
OpenGateway Payment Platform http://www.opengateway.net
Open Source Carts
ZenCart E-Commerce Shopping Cart Solution http://www.zen-cart.com/
OS Commerce http://www.oscommerce.com/