NetWorx Speed Meter
NetWorx can measure your connection speed on demand by uploading and downloading a file from a remote server. You can also schedule the test to run automatically at set intervals, for example every hour. Please note, the test consumes some of your data allowance and is not recommended if your data is limited or expensive.
The default speed units are bytes per second. If you prefer bits, you can change it in the Transfer rate unit section of the graph settings.