Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.
AidTable - Crowdsourced list of discounts to help you during COVID-19
GlassIt.co - Find discounts, without invasion of your privacy. Download Glass It Price Tracker mobile app or browser extension 🇺🇸
CouponScout - Get notified when your discount codes leak
Pricy - Amazon price watch
Offerwhere - Platform for advertising offers, and running loyalty programs online and in-store