Mactop is a terminal-based monitoring tool for Apple Silicon chips, developed by Carsen Klock. It runs on macOS Monterey 12.3 or later and requires no elevated permissions since it utilizes native Apple APIs. The tool displays real-time metrics such as CPU and GPU usage, temperatures, power consumption, and more. It targets ARM64 architecture, making it specifically designed for Apple’s M1 and M2 series chips. Features include detailed metrics for CPU cores, including E-Cores and P-Cores, along with GPU frequencies and usage percentages. Users can monitor memory and swap information, network speeds, and disk I/O activity. Mactop also visualizes connected Thunderbolt devices and provides a unique layout with customizable UI colors. It supports multiple output formats like JSON, YAML, and CSV, making it suitable for scripting and logging. Users can easily manage processes directly from the UI, enabling them to kill unwanted processes with a simple keypress. Installation is straightforward via Homebrew or by cloning the repository and building the application. Mactop allows users to customize the update interval and even has a headless mode for continuous data output. The UI is designed for easy navigation, mimicking Vim controls, which can be handy for users familiar with terminal commands. With features like Party Mode for cycling colors and the ability to auto-detect light or dark themes, it offers a user-friendly experience tailored to individual preferences.