SensorsView is a utility, that monitors the temperature of your CPU, northbridge, motherboard, VGA and hard disks, as well as voltages and fan speeds (as supported by your motherboard). It can alert you if the values reach a critical level, and also provide a complete overview of the measurements.
At critical values of any parameters (CPU overheating, fan stop) SensorsView will inform you about it and store info in the log file, also it is possible to shut down computer, play any sound, execute the application (command) or send email. You can set name, chart color, icon, critical threshold and if it is necessary, correction for all possible controllable parameters.
In addition, the program shows usage of CPU, physical memory, HDD, NIC (Network Interface Connection).