iStat menus

at menus is a complete system of statistics about the real-time performance of the Mac that takes advantage of the menu bar to show information. The user can easily personalize the information offered by iStat menus: use of the CPU, RAM status, free space on the hard drive, network traffic, temperature of the internal sensors of your computer or the revolutions per minute of the fans. Each piece of hardware has its own space in the menu bar. If you click on it, a small menu opens up with relevant information. In the same way that it is possible to select the type of information that the program will show, iStat menus also allow you to choose the way it is displayed: textually or graphically.