rcmd - Efficient macOS Application Switcher

Application Overview

rcmd is an efficiency tool that reimagines the macOS application switching experience. By cleverly utilizing the rarely-used right ⌘ (Command) key on the keyboard, it delivers lightning-fast application switching and launching.

Core Features

🚀 Instant Application Switching

• Smart Key Assignment: Hold the right ⌘ key + the first letter of an app’s name to instantly focus on that application.
• Repeated Key Handling: When an app is already focused, pressing the same key combination again will either hide it or switch to the next app with the same initial letter.

📱 Application Launching & Management

• Custom Shortcuts: Assign a dedicated shortcut to any app using ⌘ + ⌥ + any alphabetic key.
• Static List Management: Assigned apps are managed in a static list, supporting:
  • Direct launching of apps not currently running via shortcut
  • Individual configuration of hide/cycle switching behavior for each app

🎨 Beautiful Switcher Interface

Even though rcmd’s headless mode is highly efficient, it also offers three visually appealing themes:

• Minimal Theme: No transparency, plain text display
• Compact Theme: Low transparency, smaller spacing
• Comfort Theme: Vibrant visuals, clearer element separation

You can choose to display the switcher immediately or with a delay, fully customizable to your preference.

🪟 Window-Level Switching (Experimental)

rcmd implements window switching via Hammerspoon integration:

• Requires additional setup due to App Store and macOS sandbox restrictions
• Enable window switching from the bottom of the switcher interface
• Tech enthusiasts can read the related blog for technical implementation details

💼 Stage Manager Compatibility

• Fully compatible with macOS Ventura’s Stage Manager feature
• Navigate between different work stages effortlessly via keyboard

Technical Highlights & Advantages

⚡ Exceptional Performance

• Leverages the underused right ⌘ key without interfering with existing keyboard shortcuts
• Headless mode offers near-zero latency, maximizing productivity

🛠️ Highly Customizable

• Supports fully customizable shortcuts
• Behavior for each app can be adjusted based on personal preference
• Multiple display themes and trigger options available

🔄 Intelligent Conflict Resolution

• Duplicate Initial Letter Handling: When multiple apps share the same first letter (e.g., Music and Mail), assign a custom shortcut to the second one:

  Example: Assign ⌘ + U to Music
  1. Focus on the Music app
  2. Press ⌘ + ⌥ + U
  3. Setup complete – use ⌘ + U for future quick switching
  

🌟 macOS Version Compatibility

• macOS Sequoia (15) Compatibility:
  • Note: Apple restricts shortcuts containing only Option or Option+Shift in macOS 15
  • Solution: Ensure each shortcut includes at least one Control or Command key
  • Window switching key remapped to Left Control + Right Option

Installation & Troubleshooting

📦 Installation Tips

• App Store Installation Failure: If installation fails after trial, delete all rcmd.app instances from disk (including the Downloads folder)
• macOS Sequoia Compatibility: If issues arise, verify that your shortcut combinations include a Control or Command key

🔧 Quick Setup

1. Install the rcmd application
2. Configure app shortcuts as needed
3. For window switching, install and configure Hammerspoon
4. Enjoy a more efficient macOS workflow

Summary

rcmd delivers a truly efficient and personalized application switching solution for macOS users through innovative keyboard usage and thoughtfully designed features. Whether you're a power user seeking maximum efficiency or a regular user aiming to optimize your workflow, this tool offers tangible productivity gains.