Radio Silence

Radio Silence is a network monitoring and blocking tool for macOS that helps users see what applications are trying to connect to the internet and blocks unwanted outbound connections. It sits in the menu bar and displays real-time network activity, allowing users to grant or deny internet access to individual apps without affecting their ability to run locally. It is used by privacy-conscious users, security researchers, and anyone concerned about background data collection or unexpected network traffic. The app serves as a firewall for individual application permissions rather than system-wide blocking.