Paribus - Find out for free if online stores owe you a refund!
Slice Watch - Get an email when an item you've added drops in price 💸
Lolli - Earn bitcoin when you shop online
ShadowBid - iOS App - A simple iOS app to automate saving money on Amazon
Visualping - Visualping is the easiest to use website checker, webpage change monitoring, website change detector and website change alert software of the web. Read more about Visualping.
Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.