Tiny Flashlight + LED - Tiny Flashlight + LED is free to use application that can be used anywhere else, having nicely built-in functionality.
TinyWall - Lightweight and non-intrusive firewall
Flashlight - Control your Mac with a keystroke.
GlassWire - Visualize network activity in detail, get notified when new apps access the network, look out for...
Simple Flashlight - A clean flashlight with an extra bright display and customizable stroboscope.
Windows Firewall Control - Windows Firewall Control is not the built in firewall system in the Windows operating systems.