CloseAll - macOS Menu Bar App

CloseAll is a lightweight macOS menu bar app that lets you quit all running applications with a single click, with real-time system monitoring (memory, CPU, GPU, disk, thermal).

Project Structure

closeall/
├── Sources/
│   ├── main.swift                  # Entry point (manual NSApplication.run)
│   ├── AppDelegate.swift           # App delegate, setup StatusBarController
│   ├── AppSettings.swift           # UserDefaults-backed settings
│   ├── AppConstants.swift          # All constants: strings, keys, dimensions
│   ├── MemoryPressureManager.swift # System memory monitoring (host_statistics64)
│   ├── ThermalStateManager.swift   # Thermal state monitoring (ProcessInfo)
│   ├── DiskSpaceManager.swift      # Free disk space monitoring
│   ├── CPUManager.swift            # Global + per-app CPU usage monitoring
│   ├── GPUManager.swift            # GPU utilization monitoring (IOKit)
│   ├── GPUIconHelper.swift         # Custom drawn GPU status bar icon
│   ├── ProcessManager.swift        # Logic: app list, quit, force quit, ignore
│   ├── KeyboardShortcutManager.swift # Global hotkeys via NSEvent
│   ├── Models/
│   │   └── AppInfo.swift           # Model for listed apps
│   └── Views/
│       ├── StatusBarController.swift   # NSStatusItem + NSPopover
│       ├── PopoverContentView.swift    # Main SwiftUI view
│       └── AppRowView.swift            # Single app row
├── Resources/
│   └── Info.plist                  # LSUIElement=YES (hides from Dock)
├── project.yml                     # XcodeGen config
└── SPEC.md                         # Technical specification

Build & Run

xcodegen generate --spec project.yml
xcodebuild -project CloseAll.xcodeproj -scheme CloseAll -destination 'platform=macOS,arch=arm64' build

The built app will be automatically copied to /Applications/CloseAll.app.

Features

Feature	Description
Quit All	Closes all running apps at once
Minimize All	Hides all apps without closing them
Keyboard Shortcuts	⌃⌥⌘Q quit all, ⌃⌥⌘M minimize all — work even with icon hidden
Quit Selected	Check apps, quit only those
Force Quit	Force close stubborn apps
Ignore Apps	Keep apps out of the list (Finder always ignored)
Search	Find running apps by name
Hide Menu Icon	Background-only mode, shortcuts still work
Launch at Login	Auto-start with your Mac
Memory Pressure Monitor	Real-time free RAM %, colored indicator + banner + critical alert + per-app resident memory shown in app list sorted by usage
CPU Monitor	Global CPU % + per-app CPU usage shown in app list
GPU Monitor	GPU utilization % via IOKit AGXAccelerator, custom status bar icon
Disk Space Monitor	Free disk space GB/%, warning when below threshold
Thermal State Monitor	Tracks system thermal state (fair/serious/critical)
Process Groups	Shows child processes under each app with resident memory, expandable/collapsible
Orphan Processes	Lists non-system processes > 100 MB not tied to a visible app
Auto-Free Memory	When memory critically low, auto-quits background apps to free RAM
System Tray Icon	Changes icon/color based on most critical system condition, tooltip shows all states
No Dock Icon	Runs silently in the menu bar
Update Notifications	Checks GitHub for new releases and shows download banner
Zero Dependencies	Pure Swift, no external libraries

Interactions

• Left-click icon: opens the app popover
• Right-click icon: quick actions (Minimize All, Quit All, Settings)
• Click checkbox next to an app: select for batch actions
• Hover on an app row: shows quit and ignore buttons, plus CPU usage if > 5%
• Hover on a process row: shows terminate and force kill buttons with tooltips
• Per-app memory: resident memory shown as X MB or X.X GB next to each app, apps sorted by memory usage descending
• × button: close the app gently
• ⚡ button: force close unresponsive apps
• ⌃⌥⌘Q: quit all apps instantly
• ⌃⌥⌘M: minimize all apps instantly

Settings

• Keyboard shortcuts: enable/disable global shortcuts
• Require confirmation: confirmation dialog before Quit All
• Hide menu icon: hide from menu bar (shortcuts still work)
• Memory pressure monitoring: enable/disable memory monitor (on by default)
• GPU monitoring: enable/disable GPU monitor (off by default)
• Thermal state monitoring: enable/disable thermal monitor (off by default)
• Disk space monitoring: enable/disable disk space monitor (off by default)
• CPU monitoring: enable/disable CPU monitor (off by default)
• Auto-free memory: auto-quit background apps when memory is low (off by default)
• Launch at login: auto-start with your Mac

Monitoring Levels

Memory Pressure

Level	Free Memory	Indicator
Normal	> 20%	Green dot in header, standard menu bar icon
Warning	10–20%	Orange dot, yellow triangle in menu bar
Critical	< 10%	Red dot, red octagon in menu bar

GPU Usage

Level	Usage	Indicator
Normal	< 70%	White label, default icon
Warning	70–90%	Orange label, orange icon in menu bar
Critical	> 90%	Red label, red icon in menu bar

CPU Usage

Level	Usage	Indicator
Normal	< 80%	Green label
Warning	80–95%	Orange label, orange CPU icon in menu bar
Critical	> 95%	Red label, red CPU icon in menu bar

Disk Space

Level	Free Space	Indicator
Normal	> 10 GB	Green indicator
Warning	5–10 GB	Orange indicator, disk icon in menu bar
Critical	< 5 GB	Red indicator

Thermal State

Level	State	Indicator
Normal	Nominal/Fair	Green indicator
Warning	Serious	Orange indicator, thermometer icon in menu bar
Critical	Critical	Red indicator

Tooltip

The status bar icon tooltip shows a multi-line summary of all active monitors:

Memory: 45% free
Disk: 73% free
Thermal: Normal
CPU: 23%

Warning states are prefixed with ⚠ and shown in priority order.