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BreitbandmessungLibreSpeed
Free

Free public service of the Bundesnetzagentur.

 Free

Free and open source under the LGPL.

macOS, Android, Web Android, Web, Self-hosted
  • Official measurement that can document underperforming contracts
  • Compares measured speed against the contracted rate
  • Self-hosted, so the test measures your own path rather than a public server
  • No plugins or heavy dependencies; it is plain JavaScript
  • German-language and aimed at connections in Germany
  • Contract compliance evidence relevant only to German providers
  • 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
Not stated if an account is needed Not stated if an account is needed
Needs internet Not stated if it works offline

Checked October 1, 2026

Checked September 22, 2026

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