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Privacy Badger vs Malwarebytes Browser Guard: catalog facts
Privacy Badger	Malwarebytes Browser Guard
Free Free and open source under the GPL.	Free Free extension from Malwarebytes.
Browser extension	Browser extension
Blocks trackers it observes behaving badly, not only ones on a list Made by the EFF, with no monetisation attached	Combines ad, tracker, scam and malicious site blocking Available for Chrome, Firefox, Safari and Edge
Not an ad blocker; ads that do not track are left alone Learning-based blocking can miss trackers that appear on only one site	Closed source Fewer filter customisation options are documented than in dedicated content blockers
Browser extension	Browser extension
Open source	Closed source
License: GPL-3.0	License not stated
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 24, 2026

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