Christian-Katzmann

App It — Development skill for Claude Code

Development community

A Claude Code + Codex skill that turns a local project into a macOS Dock-launchable app — native window, its own icon, no Electron.

How to install App It

This entry records only its repository, not the path inside it, so there is no exact command to give. Open Christian-Katzmann/app-it and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What App It does

A Claude Code + Codex skill that turns a local project into a macOS Dock-launchable app — native window, its own icon, no Electron. [The Windows version is in BETA]

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README

app-it

[![app-it compatible](https://github.com/Christian-Katzmann/app-it/actions/workflows/app-it-compatible.yml/badge.svg)](docs/APP-IT-COMPATIBLE.md)

Turn a local web project — or any hosted web app — into a macOS Dock-launchable `.app` bundle — a native window, its own Dock icon, and clean start/stop — **without Electron, Tauri, or a rewrite.**

**Unofficial community project** — not affiliated with, endorsed by, or sponsored by Anthropic or OpenAI. "Claude Code" and "Codex" are their respective owners' marks, named here only to say which assistants app-it plugs into. This is an independent open-source tool built by one developer.

![A real app-it build in motion: double-click the Fjord demo's Dock icon, its native window opens, ⌘Q quits and frees the port](design/motion/app-it-lifecycle.gif)

*A real `app-it` build, in motion. `Fjord` is an ordinary local web project (`node server.js`); app-it turns it into a native macOS app — double-click launches it, the window opens with its own Dock icon, and ⌘Q quits the app **and** frees the dev-server port. The actual generated app, not a mockup.*

**Status** — Working, in daily use. The launcher templates are battle-tested across 12+ real projects; `v0.1.0` is the first standalone, marketplace-installable release. macOS only, by design.

**Windows beta** — macOS is in daily use; Windows is an early beta, now with its first real-hardware fixes but still needing more. A complete sibling plugin (`plugins/app-it-windows/`), gated by a required `windows-latest` CI job (build · PowerShell lint · manifest parse · icon round-trip), mirrors the macOS contract with Windows primitives. The author runs only macOS, so for a long time it had never touched real Windows hardware; that changed with [#8](https://github.com/Christian-Katzmann/app-it/pull/8), the first run on an actual Windows machine, and a run of fixes since — a real start, not a finish line. If you're on Windows and want to help harden it, the doorway is [docs/WI