This speed test is uniquely designed to test your current Internet connection speed for Latency/Ping, Jitter, Download Speed, Upload Speed, Buffer Bloat, and Packet Loss. Upon completion, you will be notified as to what types of services your connection is capable of handling, as well as additional reports about your connection. This HTML5 speed test does not require Flash or Java, and works on all devices including tablets and smartphones.
Probably the best HTML5 speed test tool available, definitely more informative than the Netflix tool, and slightly less ad ridden than beta.speedtest.net.
By their own account, the new owners of SourceForge are attempting to make the service reputable again and this tool has been made available as part of that effort. Nice.