Hands Off! 4.0.0 [BEST]

Since the tool is no longer actively maintained, you might consider these current industry standards for Mac security:

: Known for its sophisticated Network Monitor , which features an animated map of connections and a "Research Assistant" to help you understand unknown connection attempts. Hands Off! 4.0.0

: It tracks both inbound and outbound network connections to prevent applications from "phoning home". Since the tool is no longer actively maintained,

: When an application attempts an operation without a defined rule, a notification appears with detailed information (Process ID, IP address, port) to help you decide whether to allow or block it. : A popular, free, open-source firewall specifically for

: A popular, free, open-source firewall specifically for monitoring outgoing connections.

: Beyond network monitoring, it can block applications from reading or writing to specific files on your disk to protect sensitive data.

: A simpler, "annoyance-free" alternative that works silently in the background without pop-ups or alerts.