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Little Snitch: Network Monitor and Application Firewall for macOS
Protects your privacy and prevents your private data from being sent out to the Internet without your knowledge.
The redesigned interactive traffic chart provides fascinating insights into your Mac’s current and past network activity. Select from a fun variety of built-in notification sounds, some of which are modulated depending on the amount of data transmitted. Change settings, export rules, respond to alerts, or log all deny / allow events, right from the command line.
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