speedtest-cli - Test your download speed using SpeedTest on the command-line
WP Plugin Directory - A smarter way to find WordPress plugins
Global Website Speed Test - Test website load speed from 18 cities, including 3 in China
AmaLinks Pro - All-in-one WordPress plugin for Amazon affiliates
Speedtest by Ookla - Measure your ISP's performance in a click
Plugin Table - Periodic table of all the most popular WordPress plugins