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Chameleon vs JShelter: catalog facts
Chameleon	JShelter
Free Free to install from its public repository.	Free Free and open source under the GPL.
Browser extension	Browser extension
Spoofs the user agent and wider browser profile Interface familiar to former Random Agent Spoofer users	Targets fingerprinting APIs specifically instead of blocking scripts wholesale Network boundary shield blocks public pages probing your local network
Built for Firefox Spoofed profiles can break or change how some sites behave	Stronger levels break sites that legitimately use the affected APIs Adding noise can itself make a browser more distinctive in some cases
Browser extension	Browser extension
Closed source	Open source
License not stated	License: GPL-3.0
No account 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 September 23, 2026	Official website Full listing and sources Checked September 22, 2026

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