Paribus - Find out for free if online stores owe you a refund!
Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.
Slice Watch - Get an email when an item you've added drops in price 💸
Fetchee - Fetchee is a free price tracking wish list app that works with all online stores worldwide.
Gruupz - Get money back on every purchase you make on Amazon.
Savelist - Found products you want but not ready to buy?