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Privacy Badger vs Ghostery: catalog facts
Privacy Badger	Ghostery
Free Free and open source under the GPL.	Freemium The blocker is free and open source. Ghostery's contributor plan and extra services are…
Browser extension	Browser extension
Blocks trackers it observes behaving badly, not only ones on a list Made by the EFF, with no monetisation attached	Names the trackers on each page and who owns them Blocks cookie consent dialogs as well as ads and trackers
Not an ad blocker; ads that do not track are left alone Learning-based blocking can miss trackers that appear on only one site	The company's earlier advertising-related business model still makes some people wary Extra features such as private search need an account or subscription
Browser extension	Browser extension
Open source	Open source
License: GPL-3.0	License: MPL-2.0
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 September 22, 2026	Official website Full listing and sources Checked September 22, 2026

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