TopManager

A native macOS system monitor application built with SwiftUI. TopManager provides real-time monitoring of system resources including processes, applications, CPU, memory, GPU, storage, and network.

Screenshots

Processes

Apps

Performance - CPU

Performance - Memory

Performance - Network

Power & Storage

Features

Processes Tab

• View all running processes with CPU, memory, thread, energy-impact, and per-process disk I/O information
• Sort by any column (name, PID, CPU/Core, CPU/Total, Energy, memory, Disk I/O, threads, user, state)
• Process states: Running, Sleeping, Stopped, Zombie
• Context menu to terminate, force kill, suspend, or resume processes
• Deep-dive inspector (double-click / ⌘I): full executable path, launch arguments, open-file count, disk totals, energy, parent PID, Reveal in Finder
• Search processes by name or PID

Apps Tab

• View running user-facing applications
• Shows app icons, CPU/memory usage, and bundle identifiers
• Quick actions: Activate, Hide, Quit, Force Quit
• Copy bundle ID to clipboard

Performance Tab

• Real-time CPU usage graphs (global and per-core)
• Selectable time range (Live / 5m / 30m / 1h / 24h) backed by persistent history
• Memory usage visualization with donut chart
• Network throughput monitoring
• Support for Apple Silicon P-cores and E-cores

Power & Storage Tab

• System Health score (0–100) with plain-language diagnosis of what's wrong
• Recent Alerts inbox
• Battery & Power: charge, health (cycle-adjusted), cycle count, condition, temperature, power draw, time remaining, adapter wattage (via IOKit)
• System status: macOS version, uptime, thermal state
• CPU and GPU core counts
• GPU memory/VRAM usage
• Storage volumes with usage bars
• Network interface statistics

Proactive monitoring

• Alerts engine with native macOS notifications on sustained high CPU, critical memory pressure, disk almost full, thermal throttling, runaway processes, and low battery — de-duplicated so you're never spammed
• Persistent metric history stored to disk; trends survive restarts

Menu Bar

• Configurable menu-bar metric (CPU % / Memory % / Health / Download)
• Dropdown with live CPU/memory/network/GPU/battery, System Health score, and Top CPU Consumers with one-click quit

Settings (⌘,)

• Launch at login (SMAppService)
• Adjustable refresh interval (1–30 s)
• Notification toggle and alert thresholds (CPU, disk, low battery)

Requirements

• macOS 13.0 or later
• Xcode 15.0 or later (for building)

Building

1. Clone the repository:

   git clone https://github.com/hariel1985/TopManager.git
   

2. Open TopManager.xcodeproj in Xcode

3. Build and run (⌘R)

License

This project is licensed under the GNU General Public License v3.0 - see the LICENSE file for details.

Testing

Logic is covered by an XCTest suite (TopManagerTests, 55 tests) run via scripts/test.sh test. The full manual + automated process is documented in docs/TESTING.md, and the product direction in docs/VALUE_PLAN.md.

Acknowledgments

Built with SwiftUI and native macOS APIs including:

• libproc / rusage_info for process information, disk I/O and energy signals
• IOKit for GPU, battery (AppleSmartBattery) and hardware monitoring
• Metal for GPU detection
• SystemConfiguration for network monitoring
• UserNotifications for proactive alerts
• ServiceManagement (SMAppService) for launch-at-login
• Swift Charts for time-series visualization