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Ceno Browser vs Onion Browser: catalog facts
Ceno Browser	Onion Browser
Free Free and open source under the MPL-2.0 licence.	Free Free and open source under the MIT licence.
Windows, Android, iOS	iOS
Can reach blocked content through other users' shared cache Works when VPNs are blocked	Tor browsing on iOS with per-tab circuit control and security levels Endorsed by the Tor Project
Usefulness depends on how many other users are online and sharing Shared pages come from a cache and may not be current	iOS forces it onto WebKit, so it cannot match Tor Browser's fingerprint protections Browsing over Tor is noticeably slow
Downloadable app	Downloadable app
Open source	Open source
License: MPL-2.0	License: MIT
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 22, 2026

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