Pump - The fastest way to save 60% on AWS 🔥🔥
Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.
Windmill - Automated testing for your web site.
Fetchee - Fetchee is a free price tracking wish list app that works with all online stores worldwide.
Piston - Piston CloudOS is an operating system that transforms clusters of commodity servers into a single unified environment.
Keepa - Price history charts and the option to be alerted on price drops for all Amazon sites.