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.
About
CPU and memory in the menu bar, with the processes using the most a click away.
Inside
Everything it does.
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.
- Open Stackbar → Settings → Store.
- Find System Monitor and choose Install.
- 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
- 1.0.0
- Updated
- November 1, 2026
- Category
- Monitoring
- Shows in
- Menu bar, Panel, Desktop widget, Settings page
- Requires
- Stackbar 0.11.0 or later
- Publisher
- navbytes
- Bundle
- sha256 3e431d45f8b2…
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