Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.
LiveIntent - LiveIntent is a web platform that offers effective e-mail advertising services for marketers and publishers.
Keepa - Price history charts and the option to be alerted on price drops for all Amazon sites.
Adobe Primetime - Adobe Primetime is a multiscreen TV platform that helps broadcasters create and monetize viewing experiences.
Fetchee - Fetchee is a free price tracking wish list app that works with all online stores worldwide.
Affise - Affise offers performance marketing solution to manage and analyze affiliates, advertisers, creatives, conversions, offers, and payments.