No Send-data-out Softwares and Apps

Radio Silence is a macOS firewall designed to easily monitor and block unwanted network connections from applications, enhancing your privacy and security by preventing apps from sending data out without your consent. ...more

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. ...more