TinyWall - Lightweight and non-intrusive firewall
GlassWire - Visualize network activity in detail, get notified when new apps access the network, look out for...
Windows Firewall Control - Windows Firewall Control is not the built in firewall system in the Windows operating systems.
Little Snitch - Little Snitch is a firewall application that monitors and controls outbound internet traffic.
Windows 10 Firewall Control - Windows 10 Firewall Control: simple and exhaustive solution for applications network activity controlling and monitoring.
ufw - Ufw stands for Uncomplicated Firewall, and is program for managing a netfilter firewall.