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Monitoring

System Monitor

CPU, memory and disk in the menu bar, with the processes using the most.

Get it in StackbarView source
  • Signed by navbytes
  • Runs in its own sandbox
  • v1.3.0
System Monitor: CPU, memory and disk at a glance

About

CPU and memory in the menu bar, with the processes using the most a click away.

Highlight

CPU and memory, always in view

The menu bar shows CPU and memory. The panel adds five minutes of CPU history, load averages, and memory and disk bars.

Panel

Find what's slowing you down

The busiest processes are one click away, sorted by CPU or memory, each with Copy PID and Quit Process.

System Monitor: Find what is eating your memorySystem Monitor: Find what is eating your memory

Highlight

Counts memory like Activity Monitor

App memory, wired and compressed, without the file cache, so the number means the same thing it does in Activity Monitor.

Desktop widget

On your desktop too

A widget shows your Mac's load without opening anything.

System Monitor: Your Mac's load on the desktopSystem Monitor: Your Mac's load on the desktop

Gallery

Every place it shows up.

System Monitor's menu bar in dark modeSystem Monitor's menu bar in light mode
Menu bar
System Monitor's panel in dark modeSystem Monitor's panel in light mode
Panel

Inside

Everything it does.

How it measures

every 10 seconds, top takes two one-second samples (the second is the accurate one), vm_stat gives memory the way Activity Monitor counts it (app memory, wired and compressed, not the file cache), and df the disk.

In the panel

a CPU chart for the last five minutes, load averages, memory and disk bars, and the top eight processes, each with Copy PID and Quit Process.

Settings

what the menu bar shows (CPU and memory, CPU, or memory) and whether processes are sorted by CPU or memory.

Agent tool

usage returns CPU, memory, disk and the busiest processes.

Install

Two clicks in Stackbar.

  1. Open it in Stackbar, or open Stackbar → Settings → Store and find System Monitor.
  2. Choose Install.
  3. It appears in your menu bar, panel, desktop widget.

Don't have Stackbar yet? Download it free.

Or from a terminal
stackbarctl install --index https://navbytes.github.io/stackbar-plugins/index.json io.navbytes.stackbar.plugins.system-monitor
Version
1.3.0
Updated
November 4, 2026
Category
Monitoring
Shows in
Menu bar, Panel, Desktop widget, Settings page
Requires
Stackbar 0.17.0 or later
Publisher
navbytes
Bundle
sha256 3d8985efdd5b…

Version history

What's new

  1. 1.3.0Latest
    • Store screenshots now show it in use, with sample data, instead of its first-run screen.
  2. 1.2.1
    • Its own icon and colour in the Store and in Settings.

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