RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.
Lolli - Earn bitcoin when you shop online
Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.
Paribus - Find out for free if online stores owe you a refund!
Rakuten - Feel the Joy of Cash Back. Find coupons and Cash Back in just 1 click with the Rakuten browser extension
Earny.co - Win prizes on Amazon purchases