Venmon is a system resource monitoring and multi-ping tool for Windows. It can monitor system memory, processor, battery life, uptime, idle time, network traffic, and drives. It uses minimal processing power and memory usage while displaying real-time statistics. Venmon can run in portable mode, such as off a USB stick and does not require the installation of runtime modules such as .Net, Java, C++. Freeware with no bundled malware or advertisements.
TinyResMeter - TinyResMeter is a small tool that displays useful information about system resources in real time...
Ping Meter Gadget - Customizable, graphical, semi-transparent ping (latency) meter.
Taskbar Meters - Incredibly simple meters that live in the Windows 7 task bar.
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.
Wise System Monitor - Wise System Monitor that is also known as the WideCleaner is a program to monitor the process, hardware and network traffic of any system.
PingDoctor - PingDoctor is software that is considered to be the most powerful and easiest to use network route analyzer.