Chrome: If you do a lot of shopping online from a bunch of different store then you know its easy to get lose an item now and again unless you hit the buy button right away. Impulse is a Chrome extension that allows you to drop any product image from any store into a personalized shopping cart.More »

Firefox/Chrome: The Lightning Reveal extension for Google Chrome reveals what lies behind Amazon's Lightning Deals before they're live on Amazon.

Firefox extension Invisible Hand quietly shows web shoppers better prices. The Chrome version, it seems, has some interesting privacy concerns attached to it, which could potentially relay what you've been doing on the web to Amazon and other online merchants. More »