Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.
Onboarded - User Onboarding as a Service
GlassIt.co - Find discounts, without invasion of your privacy. Download Glass It Price Tracker mobile app or browser extension 🇺🇸
RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.
Pricy - Amazon price watch
LaunchSpace - Lifetime deals for smart Marketers