1)   SensorsView Pro 1.2
SensorsView Pro is a program that monitors temperature of CPU, motherboard, hard disks, voltages, and fan speeds.
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 2)   HDD Thermometer 1.3
HDD Thermometer is a small and feature-rich temperature monitoring tool for your hard disks. It has all the features needed to prevent overheating and possible data loss. (It can: play sound, hibernate PC, display HDD indicators and so on..)
thermometer, temperature, HDD, disk, drive, overheating,