OpenDMG
Mac Monitor icon

Mac Monitor for Mac

Lightweight menu bar monitor for RAM, CPU, network and disk, focused on memory pressure.

By Ahmadjondev. Free and open source, MIT licence.

Get it with OpenDMG View source on GitHub

Mac Monitor at a glance

Version
1.0.0
Released
24 October 2026
Download size
1.8 MB
Works on
Apple silicon and Intel
Licence
MIT
Category
System Tools
Developer
Ahmadjondev
GitHub stars
13

About Mac Monitor

Lightweight macOS menu-bar system monitor — RAM, CPU, network, disk. SwiftUI + AppKit, no dependencies.

Screenshots

Mac Monitor screenshot 1Mac Monitor screenshot 2Mac Monitor screenshot 3Mac Monitor screenshot 4

How to install Mac Monitor on a Mac

  1. Get OpenDMG. It is a free app store for open source Mac apps. Download OpenDMG.
  2. Search for Mac Monitor and press Get. OpenDMG downloads version 1.0.0 from Ahmadjondev's own GitHub release.
  3. Open it. The download is checked against its SHA-256 fingerprint and its signature is checked on your Mac before it lands in Applications.

Updates to Mac Monitor show up in OpenDMG and install with one button. No account is needed.

Prefer to do it by hand? The developer's file is on GitHub: MacMonitor.dmg (1.8 MB).

What is new in Mac Monitor 1.0.0

First public release.

### Added
- Menu-bar item showing live network speed (↓/↑), RAM % or CPU %, in a fixed-width
 Retina-crisp template image.
- Dashboard popover with Memory (composition bar, swap, pressure graph), Processor
 (per-core bars), Network (speed, totals, local IP), Storage (capacity, disk I/O) and
 Top apps cards.
- Full window mode with sidebar (Dashboard / Insights / Settings) and extra detail:
 CPU split, load average, processes/threads, packets, per-interface totals, IOPS,
 Battery and GPU cards.
- Insights: RAM and CPU history charts with now / average / peak, and critical-pressure
 minutes over 24 h, persisted across restarts.
- Memory cleaning with `purge`: on demand, or automatically only at critical memory
 pressure (opt-in). Optional single-command sudoers rule for silent cleaning.
- Critical-pressure notifications (opt-in).
- English, Russian and Uzbek UI, switchable live.
- Settings for menu-bar metric, update rate, network unit, card visibility and launch
 at login (LaunchAgent), grouped into sections. Warns when auto-clean is on but the
 sudoers rule is missing.
- First-launch welcome window and a styled drag-to-install DMG.
- Universal binary (Apple Silicon + Intel) for macOS 13 Ventura and later.
- Lightweight sampling: about 1% CPU in normal use. Hidden views don't re-render, and
 `ps` and disk-capacity queries run off the main thread.
…

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