Test your ADSL speed with one of these broadband speed tests in various locations around the world. Speedtest.net is the most popular internet speed test site and offers numerous locations using a Flash interface. Beware though, not all speed test sites are 100% accurate and are meant to only give an indication of your download speed. To realise the true capability of a connection one would need a multi-threaded speed test, i.e. one that sends multiple sections of a file simultaneously. The broadband tests below are all single-threaded.