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FairSpeed vs OONI Probe: catalog facts
FairSpeed	OONI Probe
Free Free and open source under the AGPL-3.0 licence.	Free Free and open source.
Android	Windows, macOS, Android, iOS
Measures latency, download and upload Uses independently-run test servers	Tests blocking of websites and messaging apps Includes network speed and performance tests
New project with a small user base Android only	Running censorship tests can carry risk in some countries Measurements are published openly
Downloadable app	Downloadable app
Open source	Open source
License: AGPL-3.0-or-later	License: GPL-3.0
Not stated if an account is needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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