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nPerf vs FAST.com: catalog facts
nPerf	FAST.com
Free The web speed test is free to run.	Free Free to use in the browser.
Windows, macOS, Android, iOS, Web	Web
Measures download, upload and latency Apps for mobile and desktop as well as the web	Very simple, gives a download figure quickly Shows loaded and unloaded latency on request
Not open source Tests against nPerf's own servers only	Upload and latency are hidden by default No jitter or packet loss measurement
Downloadable app, Web application	Web application
Closed source	Closed source
License not stated	License not stated
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 September 23, 2026

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