InvisibleHand is a web browser add-on for Firefox, Chrome and Safari. If you love to shop online, this a must-download: True
to its name, the add-on remains “invisible” on your browser until you visit a shopping site, and then it automatically searches
for better deals on the items you’re looking at. The best part? InvisibleHand syncs with Google search, so when you type
in a product, sites with the lowest prices appear first.