pqrs-org/karabiner-elements

Analysis updated 2026-06-21

★ 22,060C++Audience · generalComplexity · 2/5LicenseSetup · easy

Mindmap

mindmap
  root((Karabiner-Elements))
    What it does
      Keyboard remapping
      macOS only
      Background service
    Key Types
      Modifier keys
      Function keys
      Special keys
    Config Options
      Simple remaps
      Complex modifications
      Multiple profiles
    Setup
      Download or Homebrew
      Settings UI
    Audience
      Mac power users
      Vim users

mindmap root((Karabiner-Elements)) What it does Keyboard remapping macOS only Background service Key Types Modifier keys Function keys Special keys Config Options Simple remaps Complex modifications Multiple profiles Setup Download or Homebrew Settings UI Audience Mac power users Vim users

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What do people build with it?

USE CASE 1

Remap Caps Lock to Escape for a more comfortable Vim editing experience on a Mac.

USE CASE 2

Swap modifier keys such as Command and Option on an external keyboard to match your preferred layout.

USE CASE 3

Create a complex modification where holding one key turns another key into a custom productivity shortcut.

What is it built with?

C++CMakeXcode

How does it compare?

	pqrs-org/karabiner-elements	scottbez1/smartknob	electronicarts/cnc_remastered_collection
Stars	22,060	21,774	21,345
Language	C++	C++	C++
Setup difficulty	easy	hard	hard
Complexity	2/5	5/5	4/5
Audience	general	developer	developer

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · easy Time to first run · 5min

macOS 13-26 only, building from source requires Xcode, CMake, and an Apple Developer code signing identity.

Released under a public domain license, completely free to use for any purpose with no restrictions whatsoever.

In plain English

Karabiner-Elements is a keyboard remapping tool for macOS. "Remapping" means reassigning what a key does when you press it, for example, changing the Caps Lock key to act as Escape, swapping modifier keys, or creating complex shortcuts where pressing one key triggers a sequence of actions. It is useful for anyone who wants their keyboard to work differently from its defaults, whether to match personal habits, recover from a hardware limitation, or build custom productivity shortcuts. The tool runs as a background application on your Mac, intercepting keyboard input at a low level and transforming it before the system sees it. This means it can remap any key, including special keys, function keys, and modifier keys like Command, Option, Control, and Shift. Karabiner-Elements supports macOS 13 (Ventura) through macOS 26 (Tahoe), on both Intel-based and Apple Silicon Macs. You install it by downloading from the official site or using a package manager called Homebrew. Once installed, you configure your remappings through its settings interface, detailed documentation is available on the project's official site. The tool is written in C++ and is released under a public domain license, meaning it is completely free to use. It is an actively maintained open-source project that accepts donations. Developers who want to build it from source need Xcode, CMake, and a couple of additional build tools, along with an Apple Developer code signing identity since the app runs background system services that macOS requires to be signed.

Copy-paste prompts

Prompt 1

I want to remap my Caps Lock key to act as Escape when tapped and Control when held in Karabiner-Elements. How do I set that up?

Prompt 2

How do I create a Karabiner-Elements complex modification that maps fn+hjkl to arrow keys?

Prompt 3

I use a Windows keyboard on a Mac. How do I swap the Alt and Windows keys in Karabiner-Elements to match the Mac layout?

Frequently asked questions

What is karabiner-elements?

Karabiner-Elements is a free macOS tool that lets you remap any keyboard key, like turning Caps Lock into Escape or creating complex multi-key shortcuts, configured through a graphical interface with no coding required.

What language is karabiner-elements written in?

Mainly C++. The stack also includes C++, CMake, Xcode.

What license does karabiner-elements use?

Released under a public domain license, completely free to use for any purpose with no restrictions whatsoever.

How hard is karabiner-elements to set up?

Setup difficulty is rated easy, with roughly 5min to a first successful run.

Who is karabiner-elements for?

Mainly general.

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