Web Load Speed Test - Test your website load speed from 6 locations at once
Fast.com - Quickly test your internet speed with this fast-loading speed test powered by Netflix.
Smaller - Make your websites load faster
LibreSpeed - Self-hosted Speedtest for HTML5. Easy setup, examples, configurable, mobile friendly.
speedtest-cli - Test your download speed using SpeedTest on the command-line
Load-test.io - Website load testing made easy