Windows
http://install.speedtest.net/app/windows/latest/speedtestbyookla_x64.msi
http://install.speedtest.net/app/windows/latest/speedtestbyookla_x86.msi

Android
https://play.google.com/store/apps/details?id=org.zwanoo.android.speedtest&hl=en


macOS
https://itunes.apple.com/us/app/speedtest-by-ookla/id1153157709?mt=12
iOS
https://itunes.apple.com/us/app/speedtest-by-ookla/id300704847?mt=8
tvOS
https://itunes.apple.com/app/speedtest-net-mobile-speed/id300704847?mt=8

Chrome
https://chrome.google.com/webstore/detail/speedtest-by-ookla/pgjjikdiikihdfpoppgaidccahalehjh