Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.

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

Locotracky amazon price history comparer - We are the amazon price comparator, we inform you every time a product drops in price so you can save on all your purchases.

Slickdeals.net - Slickdeals: The Best Deals, Coupons & Discounts on everything

Yahoo Shopping - Yahoo Shopping’s price comparison website is similar to Google Shopping. Store owners can add their products to the platform. You’ll find products sold by brands like Walmart and Amazon on the platform.

Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.