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LibreSpeed vs Breitbandmessung: catalog facts
LibreSpeed	Breitbandmessung
Free Free and open source under the LGPL.	Free Free public service of the Bundesnetzagentur.
Android, Web, Self-hosted	macOS, Android, Web
Self-hosted, so the test measures your own path rather than a public server No plugins or heavy dependencies; it is plain JavaScript	Official measurement that can document underperforming contracts Compares measured speed against the contracted rate
Results depend entirely on where you host the server Fewer analytics than commercial speed test services	German-language and aimed at connections in Germany Contract compliance evidence relevant only to German providers
Web application, Self-hosted	Downloadable app, Web application
Open source	Closed source
License: LGPL-3.0	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 1, 2026

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