Honey

Honey is a free Edge extension that saves time and money by automatically checking for available discount coupons before checking out and paying for products in online stores.

You can order pizza, buy clothes or book travel and never overpay again on thousands of retailers. Never miss a lower price on Amazon and discover the best time to buy with price history charts and alerts when your favorite products are on sale.

More so, this extension provides you with a reward system that grants you points sometimes when you use its coupons while checking out. After collecting a fair amount of points, you can exchange them for Amazon gift cards.