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M-Lab Speed Test vs TestMy.net: catalog facts
M-Lab Speed Test	TestMy.net
Free Free to use in the browser.	Free Free to use in the browser; signing in is optional.
Web	Web
Reports retransmission as well as speed and latency Openly licensed measurement tools	Separate download, upload and latency tests Automatic scheduled testing
Your IP address is retained and published with the results Fewer extras than commercial speed tests	Measures only the connection of the machine running the browser Closed web service
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 October 1, 2026

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