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nPerf vs Speedtest by Ookla: catalog facts
nPerf	Speedtest by Ookla
Free The web speed test is free to run.	Free Free on the web and in the desktop and mobile apps.
Windows, macOS, Android, iOS, Web	Windows, macOS, Android, iOS, Web
Measures download, upload and latency Apps for mobile and desktop as well as the web	Works in a browser or in apps for most platforms Picks a nearby test server automatically
Not open source Tests against nPerf's own servers only	Closed source Site includes links to other Ookla services alongside the test
Downloadable app, 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.