Very simple search engine friendly shopping cart with the following item headers:
category: the category (and subcategories) that the product appears under on your site. Be sure to use a '>' when separating category levels.
name: the product's name or title as it appears on the product page.
description: the product's description as it appears on the product page.
product_url: the web page that the product appears on. Be sure to include the full URL (including 'http://') to ensure that we can successfully link to your site.
image_url: the full URL of the product image. Be sure that all images are larger than 90x90 pixels.
price: the product's price. The price you include in your feed must match the price listed on your site.
Payment by entering credit or debit card number using our secure server, no authorisation necessary
This is basically a shopping cart system with an output file required to upload to Froogle ([url removed, login to view])
It would also be handy to be able to upload products from an osCommerce database (our current system)