Digital speedometer – A digital device that measures how fast a computer is accessing your internet connection.
For example, a laptop or tablet can tell you how fast it is accessing the internet.
You can also see how much battery it is using, and if it’s charging, whether it’s online or offline.
It’s more accurate than using your mobile phone or tablet.
Google – Google’s speedometer is used to show you how much data your computer is using and to monitor network usage.
Google offers free apps to get the best speedometer for your device.
You also have access to Google’s own free Speedometer app.
It works on Windows and Mac, but you’ll need a Google account.
Source: Digital Spy