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

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