NetMute for Mac

NetMute is a privacy-focused per-app firewall for macOS. It shows you which apps on your Mac connect to which servers — and lets you control that traffic per app, per network, per category. It complements the built-in macOS firewall (which is incoming-only) by covering the outbound channel where modern privacy threats actually live: analytics SDKs, ad networks, telemetry, and trackers embedded inside otherwise ordinary apps.

Key Features

• Per-App Firewall — allow or block any app's internet access with a single click. Rules persist across reboots and app updates
• Tracker Shield — automatically detects connections to 1,100+ known tracker domains across four categories: advertising, analytics, social media, data brokers. Block by category or per tracker
• Privacy Score per App — at-a-glance privacy rating for every app based on what it actually contacts. Spot the worst offenders immediately
• Real-Time Traffic Monitor — live connections, bandwidth, and remote domains per app. Network activity becomes visible instead of invisible
• Domain-Level Tracking — drill down to the specific domains each app talks to
• Network Profiles — different rules for home, work, public Wi-Fi, hotspot. Profile switches happen automatically when the network changes
• Per-App Data Limits — cap bandwidth for individual apps. Useful on metered connections like phone hotspots
• Hotspot Protection — extra blocking on untrusted networks
• Focus Sync — connects to macOS Focus modes to adjust firewall behavior based on what you are doing
• App X-Ray — deep dive into any app's network behavior with full domain history
• Network Reports — periodic summaries of what your Mac sent where
• Fail-Open by Design — if NetMute crashes or is force-quit, your connections stay online. Privacy without breakage.