LoveSales - Find and save products you love, get alerted when they go on sale.
Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.
TrackIf - Alerts you if the price of your favorite products drop
Keepa - Price history charts and the option to be alerted on price drops for all Amazon sites.
Giftwhale - Giftwhale allows you to create personalised wish lists online.
Humane AI pin - Take Ai with you everywhere.