Best for Inspecting a single process in depth: sampling it, its open files, its energy impact.
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Stat Space vs Activity Monitor
Stat Space vs Activity Monitor
Activity Monitor is the built-in way to see what your Mac is doing, and it’s excellent at per-process detail. Stat Space lives in the menu bar instead, groups processes into the apps you recognize, and adds the developer questions Activity Monitor can’t answer.
Best for Developers who want system stats plus ports, agents and keep-awake in one light menu bar app.
Stat Space Activity Monitor
Per-process CPU, memory, disk, network
Always-on menu bar readouts —
Helpers grouped into their app —
Sample a process, open files & ports —
Energy impact per app Pro: drain since unplug
Listening ports → project & launcher —
AI agent sessions & leftovers —
Keep awake + “why won’t it sleep” —
Sensors, fans & battery health —
Price Free · Pro once Built in
Where Activity Monitor shines
- Already on every Mac, and trusted.
- Deep per-process inspection: sample, open files and ports, parent process.
- Energy impact and the system-wide energy history.
What Stat Space adds
- Glanceable numbers in the menu bar, without opening a window.
- Chrome’s 20 renderers counted as one Chrome.
- Ports, agents and orphaned dev processes, each one click from stopping.
- Sensors, power in watts, fans and battery health.
- A plain-English “why is my Mac slow?” (Pro).
Use both?
Keep Activity Monitor for deep dives into one process. Use Stat Space for the everyday “what’s going on right now” and for anything developer-shaped.
As of November 2026. Spotted something out of date? Email [email protected] and we’ll fix it.
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Know what your Mac is doing, without adding to it.
Free, no account. Pro is $9.99 once for the first 100 buyers.