OpenSpeedTest is described as 'Broadband Internet Speed Test Unlocked! Test your internet connection from Any device Run a free bandwidth test now Know your Download & Upload speed Limits'. There are more than 25 alternatives to OpenSpeedTest, not only websites but also apps for a variety of platforms, including Android, Windows, iPhone and Mac. The best alternative is Speedtest by Ookla, which is free. Other great sites and apps similar to OpenSpeedTest are Fast.com (Free), LibreSpeed (Free, Open Source), SpeedOf.Me (Free) and nPerf (Free).
SpeedOf.Me is an HTML5 Internet speed test. No Flash or Java needed! It is the smartest and most accurate online bandwidth test. It works well on iPhone, iPad, Android, Windows 8 and other mobile devices, as well as desktop computers.
More than a simple speed test, nPerf brings you the best and the fullest mobile connection quality measurement tool up to 10 Gb/s speeds! Full QoS test: In few seconds, test your bitrate speed, latency, browsing speed and video streaming quality on your mobile device.
Testmy.net is an internet connection benchmark tool, offering both Download and Upload connection speed tests. With SmarTest Testmy.net will automatically adjust for your line speed and use the most optimal test size for your connection type.