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Waveform Bufferbloat Test vs nPerf: catalog facts
Waveform Bufferbloat Test	nPerf
Free The test runs in the browser at no cost.	Free The web speed test is free to run.
Web	Windows, macOS, Android, iOS, Web
Measures latency under load, not only raw speed Runs in the browser with nothing to install	Measures download, upload and latency Apps for mobile and desktop as well as the web
Hosted on a retailer's site Tests only the connection from the device running it	Not open source Tests against nPerf's own servers only
Web application	Downloadable app, 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.