macmon
Real-time system monitor for Apple Silicon Macs (M1–M5)
...It is designed to show detailed performance information for M-series machines without requiring sudo access. The tool provides a terminal user interface for viewing CPU, GPU, RAM, power, and temperature data as the system runs. It is useful for developers, performance testers, AI users, and Mac power users who want deeper visibility into hardware behavior. macmon can also expose metrics through JSON or Prometheus-compatible output, which makes it suitable for dashboards and automated monitoring. ...