mectrics is a lightweight, free and open source system monitor that lives in the macOS menu bar. It displays real-time metrics for CPU, memory, battery, network, disk, GPU, temperature and fans. Clicking any item reveals detailed popovers with per-core CPU bars, live disk throughput, and other specifics, with customizable thresholds for alerts. Nothing leaves the Mac and it requires no installation beyond a simple download.
mectrics is a Developer Tools project. Quickly monitoring system resources and hardware metrics on a Mac without a full dashboard or leaving the menu bar. mectrics is an open-source project aimed at mac users and developers. mectrics costs nothing to use. It ships for the web and macOS.
Behind mectrics is Faruk Kamçıcı, and it first shipped in 2026. The project is developed in the open on GitHub with 88 commits in the last 90 days. Among its 6 catalogued features are Menu Bar Integration, Live Metrics, and Threshold Alerts.
Summary written by a language model from the project’s public pages.
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