little-snitch@5 ☆
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Description:
Host-based application firewall
Type: Cask  |  Latest Version: 5.7.6@0  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  formulae.brew.sh
Category: Security
Tags: firewall network-monitor security privacy traffic-control
Install: brew install --cask little-snitch@5
About:
Little Snitch is a host-based firewall that monitors and controls incoming and outgoing network connections at the application level. It provides real-time visibility into network traffic, allowing users to create granular rules to allow or block connections. This proactive defense helps protect user privacy and prevent unauthorized data exfiltration by malware or intrusive applications.
Key Features:
  • Real-time network traffic monitoring with a detailed connection inspector
  • Silent Mode for automatic rule configuration in the background
  • Network Monitor for visualizing traffic patterns and geolocation
  • Flexible, granular rule creation for specific apps, ports, and domains
Use Cases:
  • Blocking telemetry and data collection by unwanted applications
  • Detecting malware or spyware attempting to communicate with command-and-control servers
  • Preventing apps from accessing the internet when not needed
Alternatives:
  • LuLu – Open-source alternative; less polished UI and fewer advanced features compared to Little Snitch.
  • Vallum – Similar functionality with a focus on layer 4 filtering; often preferred by power users.
Version History
Detected Version Rev Change Commit
Aug 5, 2025 2:20pm 5.7.6 0 VERSION_BUMP c5133321
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