Shopable
Configuration requires a small amount of Javascript at the top of each order page. Free, with donation suggested.

Jshop Pro
Drag and drop development in a windows host. Supports integration with payment gateways, editable design, shipping and tax.

NET-Shop Creator
Tool creating an online shop, designed for quick installation, languages in English, German, French. Currencies calculated in Euro.

NebuCart eCommerce Solution
Compatible with PayPal, 2Checkout, Verisign, other payment gateways. CGI order capture script included. Demo and download available.