From the developers of broadband measurement of the Bundesnetzagentur and the Net-Neutrality Reference Systems of BEREC.
The browser-based kyago web application is accompanied by an installable kyago desktop version for measuring broadband internet access services up to 10 Gbit/s in fixed networks.
In addition to the actual data transmission rate of the broadband connection, other tests for net neutrality such as video streaming are also carried out.
Furthermore, both individual and automated measurements can be enabled/disabled via the configuration settings.
A look at the kyago desktop app
Net Neutrality Tests