RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.
Savelist - Found products you want but not ready to buy?
DontPayFull - Verified coupons and discounts for a variety of online retailers.
Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.
Groupon - Each day Groupon offers a deal through local vendors in your city.
Coupofy - Coupofy is USAs number 1 trustworthy deals and coupons website.