Not all online speed tests are good and accurate, but there are some that stand out. Here is my list of preferred online speed tests
This one is my favorite. It is much enhanced and gives a lot of features, including a very user-friendly choice of servers, comparing and sharing results with others, detailed result parameters etc. What I find most interesting with this engine is the advanced user interface. It gives you a world map, with a rectangle to select your area which, once selected, appears focused on your screen. Then, your location and a number of suitable servers are shown, with ones that are recommended. Once you choose one, your test starts in a way quite pleasing to watch. The engine is not only fancy, but relatively quite accurate. You will need to have Flash running with your browser to use this test.
This one is best for VoIP users. It is my favorite as well, but only when I need minute details. If you want a speed test that is very scientific and rich in details, then go for this test. It has a
special test for VoIP, with lots of values to compare and scale. The interface is a
Java applet with several tabs for VoIP, speed, graph, summary and advanced results. The interface places your speed on a line figuring typical connection types. The graphs detail the test activity over milliseconds. The summary advises you on where you stand with the connection you have.
I think this one is the most advanced - the site gives you to choose among four technically challenging VoIP calculators. The two calculators mentioned above are suitable for common users, while voip-calculator.com is designed for skilled users, normally from companies having to do technical VoIP planning and analysis. Paid versions that can be downloaded and installed are also available on the site, with more advanced features.
This test gives accurate results since it performs the performance test with several servers. It allows you to select the speed test type and host server.
Another interesting test engine where you have in your results the necessary parameters. Speed results are given graphically.
This a well-known test engine. It first asks you to select between the Java and the Flash version. Then you are asked to select a test server. The site gives you a lot of information on the test, as well as technical instructions and tweaks.
This one achieves roughly the same things as speedtest.net, with server selection etc., but without the nice user interface. It also tests your connection loading pictures.
