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Zen vs AdLock: catalog facts
Zen	AdLock
Free Free and open source.	Paid The AdLock apps are sold as a paid purchase.
Windows, macOS, Linux	macOS, Browser extension
Covers all browsers and apps with one install Blocks trackers as well as ads	Filters ads in apps as well as browsers No acceptable ads whitelist
Network-level filtering may need troubleshooting with some apps Not available for mobile devices	Paid, closed-source software HTTPS filtering means trusting the app with your traffic
Downloadable app	Downloadable app, Browser extension
Open source	Closed source
License not stated	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 October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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