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homebrew/homebrew-cask

📈 Trending★ 22,025RubyAudience · developerComplexity · 2/5ActiveLicenseSetup · easy

TLDR

Install macOS desktop apps from the command line instead of downloading and dragging them manually. One command replaces the whole download-and-install process.

Mindmap

mindmap
  root((repo))
    What it does
      Install GUI apps via CLI
      Automate app setup
      Manage apps like tools
    How it works
      Downloads official binaries
      Verifies installations
      Places apps correctly
    Use cases
      New machine setup
      Batch app installation
      Keep tools updated
    Tech stack
      Ruby
      Homebrew
    Audience
      Developers
      Power users

Things people build with this

USE CASE 1

Set up a new Mac with all your favorite apps in minutes using a single script.

USE CASE 2

Automate software installation across multiple machines without manual downloads.

USE CASE 3

Keep desktop applications updated alongside command-line tools through one package manager.

USE CASE 4

Manage app versions and dependencies consistently from the terminal.

Tech stack

RubyHomebrew

Getting it running

Difficulty · easy Time to first run · 5min
Use freely for any purpose, including commercial use, as long as you include the original copyright notice and license text.

In plain English

Homebrew Cask is an extension for Homebrew, the package manager for macOS, that lets you install graphical desktop applications from the command line instead of manually downloading and dragging them into your Applications folder. The traditional macOS way to install an app is to download a disk image or zip file, open it, and drag the app icon to Applications. Homebrew Cask replaces that with a single terminal command: brew install <appname>. It downloads the official binary installer, verifies it, and puts the app in the right place, all without any clicking or dragging. This is especially useful for developers and power users who want to quickly set up a new machine, automate their software installations, or keep all their tools managed through the same system. You can install an app, update it, or uninstall it using the same consistent command-line interface you would use for developer tools. Homebrew Cask is a "tap", a supplemental repository of formulas for Homebrew. Once you have Homebrew installed on your Mac, Cask functionality is built in and you can immediately start installing GUI applications alongside command-line tools. It is written in Ruby, matching the Homebrew ecosystem, and licensed under the BSD 2-Clause license. The repository itself is the community-maintained collection of "casks", definitions that tell Homebrew where to download each app and how to install it.

Copy-paste prompts

Prompt 1
Show me how to create a Homebrew Cask formula for my own macOS application.
Prompt 2
How do I write a script to install all my favorite macOS apps using Homebrew Cask?
Prompt 3
What's the syntax for a Cask definition file and how do I test it locally?
Prompt 4
How can I contribute a new app to the Homebrew Cask repository?
Open on GitHub → Explain another repo

Generated 2026-05-18 · Model: sonnet-4-6 · Verify against the repo before relying on details.