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CreepJS vs Cover Your Tracks: catalog facts
CreepJS	Cover Your Tracks
Free Free to use in the browser, with source on GitHub.	Free Free to use.
Web	Web
Runs many fingerprinting checks in one page Handy for testing anti-fingerprinting browsers and extensions	Runs in the browser with no install Shows which browser characteristics make you identifiable
Unofficial mirrors exist; only the GitHub Pages deployment is official Results are technical and take some knowledge to interpret	Diagnoses tracking exposure but does not block anything Results reflect one browser and setup at a time
Web application	Web application
Open source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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