It is important to make sure your computer is maintained well and running at an optimal temperature. Temperature Monitor Widget for Mac helps you avoid letting your computer overheat by reading out all accessible temperature sensors. It is a rather easy-to-use and non-intrusive widget that runs in the background.
Temperature Monitor Widget for Mac comes in a 200KB installer and adds the widget to the dashboard. It will default to displaying the temperature of your CPU, but you have the option to change which components it monitors. The app is very non-intrusive and you'll most likely forget it's even running until you pull up your dashboard. There's an option to change the temperature to either Celsius or Fahrenheit. The design of the app is very basic yet efficient, and all the information is displayed on a clear and concise interface. Since it's attached to the dashboard you can easily and quickly access the widget whenever you need to pull it up.
Temperature Monitor Widget for Mac is a lite version of its sister app Temperature Monitor. It is a great little system-monitoring widget that will cover the needs of most users. However, it does lack features seen in more complete apps.
Temperature Monitor Widget Edition is the Dashboard version of its "bigger brother" Temperature Monitor. It is recommended that you use Temperature Monitor first before using the widget edition to learn more about the sensor equipment of your computer. The applications are designed to give you access to all temperature sensor readings Mac OS X uses to monitor and cool your computer.
The widget allows you to select two of your computer's temperature sensors which should be displayed via Dashboard. The sensor readouts are displayed in a compact panel.
Unlike other widgets, Temperature Monitor is capable of processing the hardware calibration data Apple stores individually into each G5-based computer. So it displays the exact readings Mac OS X internally uses for cooling control, not just an "educated guess".
For detailed technical information about sensor discovery please see the developer's site.