Venmon - Compact size system resources monitoring utility and multi-ping tool for Windows
Taskbar Meters - Incredibly simple meters that live in the Windows 7 task bar.
Mousotron - Mousotron is a mouse and keyboard activity monitor and keeps statistics of your mileage. It's like an odometer or tripometer for your mouse cursor.
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.
Desktop Info - This little application displays system information on your desktop in a similar way to some other...
Rainmeter - Rainmeter is a desktop customization platform.