Compare software

LibreSpeed vs M-Lab Speed Test: catalog facts
LibreSpeed	M-Lab Speed Test
Free Free and open source under the LGPL.	Free Free to use in the browser.
Android, Web, Self-hosted	Web
Self-hosted, so the test measures your own path rather than a public server No plugins or heavy dependencies; it is plain JavaScript	Reports retransmission as well as speed and latency Openly licensed measurement tools
Results depend entirely on where you host the server Fewer analytics than commercial speed test services	Your IP address is retained and published with the results Fewer extras than commercial speed tests
Web application, Self-hosted	Web application
Open source	Closed source
License: LGPL-3.0	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.