IceFloor
IceFloor is the first OS X free graphic frontend for PF. Configure the PF firewall in a few clicks using a very simple interface and a step by step in-app configuration guide (Quick Start).
Comodo Free Firewall
Secure your system against internal attacks such as Trojan viruses / malicious software and external attacks by hackers. Safeg ...
Murus Firewall
Murus is a frontend for the OS X PF network firewall. From basic filtering to advanced proactive options, Murus allows to easi ...
little-snitch
netfilter
Netfilter software comprises iptables, ipset, conntrack-tools, libnetfilter and more. It is the core of Linux firewalls and NA ...
Radio Silence
Radio Silence lets you block individual apps from accessing the internet. It never throws pop-ups on the screen, and is comple ...
LuLu by Objective-See
LuLu is the free, shared-source firewall for macOS. Its goal is simple; block any unknown outgoing connections, until approved ...