Ping Meter Gadget - Customizable, graphical, semi-transparent ping (latency) meter.
Wireless Network Watcher - scans your wireless network and displays the list of all computers and devices that are currently connected to your network.
NetTK - NetTK, Network Tool Kit, is an Open Source alternative for monitoring and troubleshooting your...
inSSIDer - inSSIDer Essential makes it easy to maintain small business WiFi.
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.
Aircrack-ng - Aircrack-ng is an 802.