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LuLu vs Murus: catalog facts
LuLu	Murus
Free The open-source software is available without a license fee. Hosting, hardware and…	Freemium Offered in three versions at different levels; see the website for current prices.
macOS	macOS
Provides an open-source firewall interface for network access decisions.	Uses the PF firewall already built into macOS Port knocking, adaptive firewall and NAT
Blocking the wrong connection can interrupt an application's features.	macOS only Works at the network layer; per-app control needs the separate Vallum app
Downloadable app	Downloadable app
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	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 2, 2026

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