DontPayFull - Verified coupons and discounts for a variety of online retailers.
Onboarded - User Onboarding as a Service
RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.
CouponSwift.com - Coupon codes and deals for Domain Names, Web Hosting, VPN, WordPress Themes and software.
PriceCute - Keep up with your competition's pricing on Amazon
Dealspotr - Dealspotr is like Wikipedia for deals.