Top Alternatives to Radio Silence

Little Snitch is an essential network monitoring and firewall tool for macOS. It provides granular control over your Mac's network connections, alerting you whenever an application attempts to connect to the internet and allowing you to decide whether to permit or deny the connection.

GlassWire is a powerful network security monitoring tool and firewall that visualizes your network activity. It helps you see what applications are using your internet connection and alerts you to potential threats.

ZoneAlarm Free Firewall provides essential network protection for home users. It offers a robust two-way firewall to monitor and control incoming and outgoing network traffic, safeguarding your system against unauthorized access and malicious intrusions.

Hands Off! is a powerful macOS-based application that provides comprehensive control over your computer's network connections and disk access, protecting your privacy and security by preventing applications from sending out data or accessing files without your consent.