Zen Cart: tabbed navigation of main categories, custom sub-categories styling, multiple product uploads/images, custom pages, slideshow, grid layout, split login.

Zen Cart: css drop down, newsletter subcription, custom pages, personlized login, grid layout, split login.

Zen Cart: Zen Cart: newsletter subcription, custom pages, grid layout, split login.

Zen Cart: Custom Freight Module, jQuery gallery, custom affiliate page, custom fabricator page, 2 template colours.

osCommerce: multiple product uploads/images, gift certificates, custom pages.