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Ghostery vs AdGuard Browser Extension: catalog facts
Ghostery	AdGuard Browser Extension
Freemium The blocker is free and open source. Ghostery's contributor plan and extra services are…	Free The browser extension is free to install.
Browser extension	Browser extension
Names the trackers on each page and who owns them Blocks cookie consent dialogs as well as ads and trackers	Blocks ads, pop-ups and trackers Cosmetic filtering hides leftover page elements
The company's earlier advertising-related business model still makes some people wary Extra features such as private search need an account or subscription	Only filters inside the browser, not other apps System-wide filtering requires AdGuard's separate apps
Browser extension	Browser extension
Open source	Open source
License: MPL-2.0	License: GPL-3.0
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 23, 2026

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