OctoShop for Chrome - Compare prices and get alerts when things are back in-stock
Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.
Wikibuy - Find lower prices at other sellers while you shop on Amazon
CouponFollow Cently - Coupons at Checkout is a browser plugin for Chrome, Firefox, Internet Explorer, and Safari that...
NetDania - NetDania Stock & Forex Trader app helps you in adding a company to a watch list to follow any gain or loss in the price and place an order of stocks of a company at the desired price.
Cently - Automatic coupons + cashback for you and your friends