PriceCute - Keep up with your competition's pricing on Amazon

RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.

GlassIt.co - Find discounts, without invasion of your privacy. Download Glass It Price Tracker mobile app or browser extension 🇺🇸

DontPayFull - Verified coupons and discounts for a variety of online retailers.

Price Tracker by Relbis Labs - Price Tracker is a command-line tool for monitoring the prices of productsFeaturesTracking prices and availability of products.Tracking Amazon Kindle books.Displaying products information in a terminal.Exporting data into Excel and YAML files.

Groupon - Each day Groupon offers a deal through local vendors in your city.