Apps to CPU Monitoring

GeekTool is a powerful macOS application designed to enhance your desktop customization by displaying various information directly on your background. It allows users to run shell scripts, display media, or show file contents through 'Geeklets,' effectively turning your desktop into a dynamic dashboard of system data and other relevant information.

XWidget is a free, lightweight desktop customization platform allowing users to add highly configurable and visually appealing widgets to their desktop. It features a powerful visual editor for creating custom widgets and supports smooth animations and system monitoring.

Windows Task Manager is a built-in system utility providing essential information about software and processes running on your computer. It allows users to monitor performance metrics, manage applications and background processes, and gain insights into resource usage, aiding in system diagnostics and troubleshooting.

Process Explorer is a powerful, free Windows utility from Sysinternals that provides detailed information about running processes, including DLLs loaded, handles open, and resource usage. It's a significant upgrade over the standard Windows Task Manager for advanced users and system administrators.