Firefox add-on that checks webpages you are currently surfing on for products that are displayed on Internet merchants.
Version: 0.2.11FiDough checks the page you're viewing to see if it is a product page at an Internet merchant (such as Amazon or NewEgg). If it finds a product, it displays a small box on the upper-left corner of the page that will display the price of that product on other merchant's sites. You can thus easily find much better prices without having to do the searches yourself.
Operating System: Mac OS X
The FiDough extension allows you to fetch the best prices on the Net for the products you're viewing. The FiDough addon is cross-platform and it works on Mac OS X, Windows and Linux.