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FairSpeed vs M-Lab Speed Test: catalog facts
FairSpeed	M-Lab Speed Test
Free Free and open source under the AGPL-3.0 licence.	Free Free to use in the browser.
Android	Web
Measures latency, download and upload Uses independently-run test servers	Reports retransmission as well as speed and latency Openly licensed measurement tools
New project with a small user base Android only	Your IP address is retained and published with the results Fewer extras than commercial speed tests
Downloadable app	Web application
Open source	Closed source
License: AGPL-3.0-or-later	License not stated
Not stated if an account is needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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