# Activity Monitor ### A clearer view of your Mac. Keep an eye on performance, understand resource usage, and find the processes that need your attention. [![CI](https://github.com/wieslawsoltes/ActivityMonitor/actions/workflows/ci.yml/badge.svg)](https://github.com/wieslawsoltes/ActivityMonitor/actions/workflows/ci.yml) [![Release](https://img.shields.io/github/v/release/wieslawsoltes/ActivityMonitor)](https://github.com/wieslawsoltes/ActivityMonitor/releases/latest) ![macOS 14+](https://img.shields.io/badge/macOS-14%2B-20242c) ![Apple silicon and Intel](https://img.shields.io/badge/Apple_silicon_%26_Intel-supported-4086f7) **[Download for macOS](https://github.com/wieslawsoltes/ActivityMonitor/releases/latest)** · [Installation](#installation) · [Features](#five-views-one-clear-picture)
![Activity Monitor in light appearance](docs/screenshots/v1.1/cpu-light.jpg) ## Five views. One clear picture. | View | What you can see | | :--- | :--- | | **CPU** | Live processor usage, the busiest processes, CPU time and thread counts. | | **Memory** | Memory pressure, active and compressed memory, swap, and each process’s footprint. | | **Energy** | Battery charge, charging status, Low Power Mode, thermal state and application CPU workload. | | **Disk** | Process reads and writes, transfer totals and current throughput. | | **Network** | Incoming and outgoing traffic, packet activity and per-process byte counts. | ## Find the detail that matters - **Find a process quickly.** Search by name, PID or user; filter and sort the list; choose the columns you need. - **Look closer.** Inspect a process, copy its PID, reveal its executable, view open files or capture a stack sample. - **Take action.** Quit or force quit your processes, with confirmation before termination. - **Follow changes.** Switch between one-, five- and fifteen-minute histories, adjust the refresh interval or pause the view. - **Keep a record.** Export process data as CSV or JSON and save diagnostic reports. - **Stay informed.** Add the optional CPU monitor to your menu bar. ## Comfortable in any light Choose light, dark or system appearance. A compact inspector keeps process details alongside the table, while the overview remains visible as you scroll. ![Activity Monitor in dark appearance](docs/screenshots/v1.1/cpu-dark.jpg) *Screenshots show the running app with real system data.* [Explore all five views in both themes](docs/screenshots/README.md). ## Smoother everyday monitoring Tabs respond across their full bounds. Clear hover, press and search-focus feedback makes controls easier to use, while a lighter process table reduces the work needed to switch views. Sampling stays at the same frequency. See the [profiling results](docs/performance/README.md). ## Installation 1. Download the **universal DMG** from the [latest release](https://github.com/wieslawsoltes/ActivityMonitor/releases/latest). 2. Open the disk image and drag **Activity Monitor** into **Applications**. 3. Open Activity Monitor from Applications. Requires **macOS 14 or later**. The same download supports **Apple silicon and Intel**. A ZIP containing the complete app is also available. This app is separate from Apple’s built-in Activity Monitor. **First launch:** Current releases are ad-hoc signed and not Apple notarized. If macOS blocks a downloaded copy, attempt to open it, then use **System Settings → Privacy & Security → Open Anyway** if you trust the source. No security setting needs to be disabled. To uninstall, quit the app and move it from Applications to the Trash. See [installation notes](INSTALL.md) for details. ## Keyboard controls | Shortcut | Action | | :--- | :--- | | **⌘1–⌘5** | Switch views | | **⌘K** | Search processes | | **Space** | Pause or resume | | **↑ / ↓** | Select a process when the list is focused | | **Return / Escape** | Open or close the inspector when the list is focused | | **⌘⇧E** | Export all processes as CSV | The toolbar export button saves the current filtered and sorted list. ## Your data stays on your Mac No accounts, telemetry or uploads. Reports and exports are saved to a location you choose. No administrator helper is installed. macOS restricts some process information; unavailable values appear as **—**. The Energy view shows **CPU workload**, not Apple’s proprietary Energy Impact score. GPU usage and per-process packet counts are unavailable. Disk totals cover readable processes; network totals can differ from individual process counters. Histories begin at launch and stay in memory for up to fifteen minutes. [Measurement details](docs/METRICS.md) · [Report an issue](https://github.com/wieslawsoltes/ActivityMonitor/issues) · [Development guide](DEVELOPMENT.md) ## Design The interface is based on this [original design](https://chatgpt.com/share/6a9c6a89-70e0-83eb-a977-4ca6e6f34766).