Hardware Monitor is an application to read out all accessible hardware sensors in Macintosh computers released between August 2002 and October 2012. Currently more than 100 different Macintosh hardware sensors and more than 200 hard drive temperature sensors are supported. The program can visualize the history graphs of the readings, display measured Hardware Monitor is an application to read out hardware sensors in Macintosh computers. Several hundred sensors in more than 70 model series are supported. The program can display and visualize measured values in a large variety of fashions, including speech output. Readings can be stored and exported. In addition, artificial software sensors monitoring OS X can be defined, and external LCD units can be controlled. The application also allows you to explore other technical data of your computer, like exact processor type, logicboard data, battery, display, and drive information, or manufacturing details.

Depending on what sensors are built into your Mac, the following data can be accessed:
• Temperarature readings at different locations
• Battery data of portable computers
• Voltage sensors
• Current (amperage) sensors
• Fan speed sensors
• Power and load sensors
• Ambient light sensors
• User-defined artificial sensors to monitor the operating system

Limitations: The program will only display readouts of temperature sensors, not other values like voltage, current, fan speed, etc. A demo mode panel will appear each time you launch the application. The demonstration window lists in detail which sensors would be available for display if you decided to unlock the program.

Author's Note: The product is still in distribution and under full support, but there will be no updates to support new Macintosh systems released in 2017 or later.

Requirements:
OS X 10.10+
Intel