Gufw - Gufw is an easy, intuitive way to manage your Linux firewall.
TinyWall - Lightweight and non-intrusive firewall
Little Snitch - Little Snitch is a firewall application that monitors and controls outbound internet traffic.
Emsisoft Online Armor Firewall - Emsisoft Online Armor Firewall is a freemium online firewall protection system by the Emsisoft that is based on the own independent protection technology of the Emsisoft.
netfilter - Netfilter software comprises iptables, ipset, conntrack-tools, libnetfilter and more.
Windows 10 Firewall Control - Windows 10 Firewall Control: simple and exhaustive solution for applications network activity controlling and monitoring.