# Hammerspoon (open-source chat app)

> Hammerspoon is a free, open-source chat app for macOS. Staggeringly powerful macOS desktop automation with Lua. It has 16,240 GitHub stars and is released under the MIT license. Its source code is on GitHub at Hammerspoon/hammerspoon.

This is a tool for powerful automation of OS X. At its core, Hammerspoon is just a bridge between the operating system and a Lua scripting engine.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/Hammerspoon/hammerspoon |
| Platforms | macOS |
| Interface | desktop GUI |
| GitHub stars | 16,240 |
| License | MIT (open source) |
| Replaces | n/a |
| Language | Objective-C |
| Website | none listed |
| Official | yes (published by the project behind the app) |
| Category | Chat & communication |
| Latest release | 1.1.1 (Feb 26, 2026) |
| Last commit | Jul 8, 2026 |

## Install

### Homebrew (macOS)

```sh
brew install hammerspoon
```

Package page: https://formulae.brew.sh/formula/hammerspoon

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