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M-Lab Speed Test vs Waveform Bufferbloat Test: catalog facts
M-Lab Speed Test	Waveform Bufferbloat Test
Free Free to use in the browser.	Free The test runs in the browser at no cost.
Web	Web
Reports retransmission as well as speed and latency Openly licensed measurement tools	Measures latency under load, not only raw speed Runs in the browser with nothing to install
Your IP address is retained and published with the results Fewer extras than commercial speed tests	Hosted on a retailer's site Tests only the connection from the device running it
Web application	Web application
Closed source	Closed source
License not stated	License not stated
No account needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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