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Murus vs Vallum: catalog facts
Murus	Vallum
Freemium Offered in three versions at different levels; see the website for current prices.	Paid Single licence costs $15 and a five-licence family pack $20, with a 15-day free trial.
macOS	macOS
Uses the PF firewall already built into macOS Port knocking, adaptive firewall and NAT	Inbound and outbound per-app filtering with popup alerts Rules by domain, app signature, developer and network conditions
macOS only Works at the network layer; per-app control needs the separate Vallum app	macOS only Paid after the 15-day trial
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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