Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.
Square - Square helps millions of sellers run their business-from secure credit card processing to point of sale solutions. Get paid faster with Square. Sign up today!
Fetchee - Fetchee is a free price tracking wish list app that works with all online stores worldwide.
Lightspeed - retail and restaurant point-of-sale, ecommerce, and omnichannel solution
Keepa - Price history charts and the option to be alerted on price drops for all Amazon sites.
QuickBooksPOS - QuickBooksPOS offer POS system software for small businesses.