Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.
Invisible Hand - InvisibleHand gets you the lowest price on shopping and flights.
CouponFollow Cently - Coupons at Checkout is a browser plugin for Chrome, Firefox, Internet Explorer, and Safari that...
RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.
Cently - Automatic coupons + cashback for you and your friends
Capital One Shopping - Get the best coupon code, the best price, and alerts when items you viewed go on sale.