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FAST.com vs Breitbandmessung: catalog facts
FAST.com	Breitbandmessung
Free Free to use in the browser.	Free Free public service of the Bundesnetzagentur.
Web	macOS, Android, Web
Very simple, gives a download figure quickly Shows loaded and unloaded latency on request	Official measurement that can document underperforming contracts Compares measured speed against the contracted rate
Upload and latency are hidden by default No jitter or packet loss measurement	German-language and aimed at connections in Germany Contract compliance evidence relevant only to German providers
Web application	Downloadable app, Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is 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 1, 2026

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