This seems to be superior in many ways to these competitors (please add others):

https://www.speedtest.net/

https://www.speakeasy.net/speedtest/ (USA)

https://performance.cira.ca/ (Canada)

That’s a beautiful UI and not heavy like Speedtest.com

I love the box plots showing the spread of ping times, download rates etc.

Very well done.

[1] is still #1

[1] http://www.dslreports.com/speedtest