speedtest-cli - Test your download speed using SpeedTest on the command-line
Textalyzer - Analyze text readability and SEO parameters
Global Website Speed Test - Test website load speed from 18 cities, including 3 in China
Dareboost: Website Speed Comparison - Check how fast your website is against your competitors
Speedtest by Ookla - Measure your ISP's performance in a click
Ubersuggest - Want more traffic? Ubersuggest shows you how to win the game of SEO. Just type in a domain or a keyword to get started.