Good Gear Guide
In Pictures: 35 open source and free tools to mana...
Commerce.CGI is a free Perl shopping cart for Unix-based servers, although developers claim it runs on Windows NT with minor code changes. Commerce.CGI can be an add-on for existing websites or installed and configured to manage a new product website. Standard shopping cart features include templates, email management, product search and payment methods. Commerce.CGI also supports sales tax, multiple shipping options, discount calculations and other options for customer check out. Commerce.CGI is free and supported through the online mailing list or a bulletin board system. User-contributed modifications are freely distributed.
In Pictures: 35 open source and free tools to manage your online store