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KnockKnock vs BlockBlock: catalog facts
KnockKnock	BlockBlock
Free The software is free under its open-source licence. Hosting, hardware and external…	Free Free, with source code published on GitHub.
macOS	macOS
It enumerates login items, launch agents and daemons, kernel extensions and browser extensions in one pass, and…	Real-time alerts for new launch items and other persistence Built on Apple's Endpoint Security Framework
It reports persistence points rather than judging them, so interpreting the list takes some knowledge of macOS…	macOS only, version 10.15 or later Requires Full Disk Access and admin authorization
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	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.