Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.
PriceCute - Keep up with your competition's pricing on Amazon
Keepa - Price history charts and the option to be alerted on price drops for all Amazon sites.
GlassIt.co - Find discounts, without invasion of your privacy. Download Glass It Price Tracker mobile app or browser extension 🇺🇸
PriceSpy - PriceSpy helps you save money when shopping online.
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.