NetLimiter - NetLimiter is an ultimate Internet traffic control and monitoring tool designed for Windows.
TinyWall - Lightweight and non-intrusive firewall
NetBalancer - NetBalancer is a Windows application for local network traffic control and monitoring.
GlassWire - Visualize network activity in detail, get notified when new apps access the network, look out for...
cFosSpeed - cFosSpeed is a network driver, which attaches itself to existing Internet connections.
Little Snitch - Little Snitch is a firewall application that monitors and controls outbound internet traffic.