Radio Silence - Radio Silence is a network monitor and firewall for the macOS. The software stops apps from making network connections. The firewall runs in the background and does not require an open window.

GlassWire - Visualize network activity in detail, get notified when new apps access the network, look out for...

LaunchBar - Start with a single keyboard shortcut to access and control every aspect of your digital life. Use LaunchBar and improve your workflow now.

NetBeez Remote Worker Agent - Simplifying tech support of work from home users.

Netler - Tiny network monitor for menu bar & notification center 🖥📡

Little Snitch - Little Snitch is a firewall application that monitors and controls outbound internet traffic.