Ping Meter Gadget - Customizable, graphical, semi-transparent ping (latency) meter.
TinyWall - Lightweight and non-intrusive firewall
NetTK - NetTK, Network Tool Kit, is an Open Source alternative for monitoring and troubleshooting your...
GlassWire - Visualize network activity in detail, get notified when new apps access the network, look out for...
Fping (open source) - fping is a program to send ICMP echo probes to network hosts, similar to ping, but much better performing when pinging multiple hosts.
Windows Firewall Control - Windows Firewall Control is not the built in firewall system in the Windows operating systems.