Web Load Speed Test - Test your website load speed from 6 locations at once
Smaller - Make your websites load faster
Global Website Speed Test - Test website load speed from 18 cities, including 3 in China
Cloudinary - Cloudinary is a cloud-based service for hosting videos and images designed specifically with the needs of web and mobile developers in mind.
Speedtest by Ookla - Measure your ISP's performance in a click
speedtest-cli - Test your download speed using SpeedTest on the command-line