What are some alternatives?
When comparing openpyn and Fast.com, you can also consider the following products
OpenSpeedTest - Broadband Internet Speed Test Unlocked!
Speedtest.net - Test your Internet connection bandwidth to locations around the world with this interactive broadband speed test from Ookla
Updown Test - Free Online Internet Speed Test
SpeedOf.Me - SpeedOf.Me is an HTML5 Internet speed test. No Flash or Java needed!
Testmy.net - Accurately test your Internet connection speed with this powerful broadband speed test. Improve your bandwidth speed with the truth.
speedtest-cli - Test your download speed using SpeedTest on the command-line