The CGI-BIN
Shopping Cart Scripts

Although not really for the average web master... if you run any type of online store you absolutely need one of these scripts.

CyberCart - By RT Web Design and Consulting
A good script that has a few options that other shopping cart scripts don't have. Has the ability to run multiple stores from one script and also includes many UPS standard shipping options. Runs on securred or unsecurred web server.

Web Store - By Selena Sol
An outstanding script! Does absolutely everything it should... keeps running tabs on an individual's shopping cart, their total price, and many other things. Allows for secure ordering and easy setup/administration. Even if you don't run a store, you may want to download this script just to check it out.