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.
NetSetMan - Are you tired of changing your network configuration on your laptop every day?
Ping Meter Gadget - Customizable, graphical, semi-transparent ping (latency) meter.
TCP/IP Manager - Designed to help computer users keep track of their network configuration in different locations.
NetCrunch Tools - Our free network tools offer ping scanning, SNMP scanning, port and network service scanning, and more.
Free IP Switcher - Free IP Switcher Help