Speccy is a comprehensive, lightweight, advanced system information tool.

Hardware Info (HWiNFO) is a powerful system information utility designed especially for detection of hardware.

iStat is an advanced Mac system monitor for your menubar.

Core Temp is a compact, no fuss, small footprint, yet powerful program to monitor processor temperature and other vital information.

SpeedFan is a program that monitors voltages, fan speeds and temperatures in computers with hardware monitor chips.

AIDA64 is a system information, diagnostics, and auditing application.

HWMonitor is a hardware monitoring program that reads PC systems main health sensors : voltages, temperatures, fans speed.

Real Temp is a temperature monitoring program designed for all Intel processors.