GlassWire - Visualize network activity in detail, get notified when new apps access the network, look out for...
Windows 10 Firewall Control - Windows 10 Firewall Control: simple and exhaustive solution for applications network activity controlling and monitoring.
Fing Desktop - Device discovery and network monitoring
TinyWall - Lightweight and non-intrusive firewall
Go Fucking Work - Website blocker so you can get back to your fucking work
Little Snitch - Little Snitch is a firewall application that monitors and controls outbound internet traffic.