Global Website Speed Test - Test website load speed from 18 cities, including 3 in China
Speedtest by Ookla - Measure your ISP's performance in a click
Cloudinary - Cloudinary is a cloud-based service for hosting videos and images designed specifically with the needs of web and mobile developers in mind.
Speedy - Speedy lets you perform fast, private and real-world accurate speedtests directly from your Menubar through Apple's servers.
Meteor - Meteor is a set of new technologies for building top-quality web apps in a fraction of the time.
Piio - Generates responsive images so you don't have to optimize