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nPerf vs FairSpeed: catalog facts
nPerf	FairSpeed
Free The web speed test is free to run.	Free Free and open source under the AGPL-3.0 licence.
Windows, macOS, Android, iOS, Web	Android
Measures download, upload and latency Apps for mobile and desktop as well as the web	Measures latency, download and upload Uses independently-run test servers
Not open source Tests against nPerf's own servers only	New project with a small user base Android only
Downloadable app, Web application	Downloadable app
Closed source	Open source
License not stated	License: AGPL-3.0-or-later
No account needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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