Technitium MAC Address Changer - Technitium MAC Address Changer (TMAC) is a freeware utility to instantly change or spoof MAC Address of any network card (NIC).
Ping Meter Gadget - Customizable, graphical, semi-transparent ping (latency) meter.
Npcap - Npcap is the Nmap Project's packet sniffing library for Windows.
NetTK - NetTK, Network Tool Kit, is an Open Source alternative for monitoring and troubleshooting your...
WinPcap - Industry-standard tool for link-layer network access in Windows.
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.