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nPerfLibreSpeed
Free

The web speed test is free to run.

 Free

Free and open source under the LGPL.

Windows, macOS, Android, iOS, Web Android, Web, Self-hosted
  • Measures download, upload and latency
  • Apps for mobile and desktop as well as the web
  • Self-hosted, so the test measures your own path rather than a public server
  • No plugins or heavy dependencies; it is plain JavaScript
  • Not open source
  • Tests against nPerf's own servers only
  • Results depend entirely on where you host the server
  • Fewer analytics than commercial speed test services
Downloadable app, Web application Web application, Self-hosted
Closed source Open source
License not stated License: LGPL-3.0
No account needed Not stated if an account is needed
Needs internet Not stated if it works offline

Checked September 23, 2026

Checked September 22, 2026

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