LanGuard

macOS menu-bar app that turns off Wi-Fi automatically when you're on wired Ethernet

Desktopfreeglobal

LanGuard is a free, open-source macOS menu-bar app that automatically disables Wi-Fi when a wired Ethernet connection is active, and re-enables it when unplugged, without needing admin privileges. It's for macOS users who want to avoid unnecessary Wi-Fi radio activity or network routing conflicts while connected by cable.

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