Open Hardware Monitor - Monitors temperature sensors, fan speeds, voltages, load and clock speeds, with optional graph.
ThrottleStop - ThrottleStop is a lightweight application that was designed primarily for people who use their computers plugged into the wall and do not use the battery.
SpeedFan - Hardware monitor for Windows that can access digital temperature sensors located on several 2-wire SMBus Serial Bus. Can access voltages and fan speeds and control fan speeds. Includes technical articles and docs.
WinTools.net - Is a suite of tools for increasing MS Windows operating system performance. WinTools.
Macs Fan Control - Macs Fan Control is an iMac, MacBook Pro, MacBook Air, Mac Mini and Mac Pro fan control that is the solution of two basic issues namely noise problems and overheating problems.
DriverHub - DriverHub - utility for Windows 7, 8, 8.1, 10 drivers update. Absolutely free and safe.