Desktop LangGraph IDE

LangTailor — the LangStitch
canvas on your desktop

LangTailor is the downloadable LangGraph IDE — a branded build of VS Code / Code-OSS with the LangStitch drag-and-drop canvas, Python 3.13 export, the SDK Component Designer, and marketplace sync built in. One installable app: full code editor plus the visual graph canvas.

Download for desktop Install VSX from Open VSX GitHub Releases
Windows x64 macOS x64 macOS arm64 VS Code / Code-OSS Open VSX MIT

Downloads

Install LangTailor

Grab a portable build for your platform from the latest GitHub Release. Unsigned dev builds run today; signed/notarized installers ship as signing certificates are configured.

Use the canvas extension in your own editor

Open VSX

Prefer your existing VSCodium / Gitpod / Eclipse Theia setup? Install the LangTailor canvas extension from Open VSX and open any *.langstitch.json file to launch the editor.

Install from Open VSX

codium --install-extension langstitch.langtailor-canvas

Then open or create a *.langstitch.json file to start designing.

Full LangGraph IDE on your desktop

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Visual canvas + code editor

The LangStitch drag-and-drop graph canvas alongside the full VS Code editor, terminal, and Git.

🧩

SDK Component Designer

Author custom nodes, connectors & adaptors visually and export them as portable .component.json.

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Python 3.13 export

Generate a buildable multi-module project straight from the canvas — review it in Git like any service.

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Marketplace sync

Sign in and your acquired plugins, connectors, and components install and update automatically.

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Native file editing

A VS Code custom editor hosts the canvas for *.langstitch.json — undo, dirty-state, and save are owned by the editor.

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Open source

Built on MIT-licensed Code-OSS, the same base as other branded IDEs. Self-host friendly, no lock-in.

Built-in extensions

langtailor-canvas

The custom editor for *.langstitch.json — the LangStitch React canvas embedded in VS Code, syncing edits to the TextDocument.

langtailor-marketplace

Sign in with Google / Microsoft / LinkedIn, then acquired marketplace plugins and connectors install and update automatically.

How it works

LangTailor follows the maintainable VSCodium-style overlay approach: pin an upstream Code-OSS version, apply branding, and bundle the LangStitch canvas + marketplace extensions. The canvas uses the same React webview as the downloadable VSX extension, so features land in both distribution paths. 

LangTailor (Code-OSS based desktop IDE)
└── built-in extensions
    ├── langtailor-canvas       # custom editor for *.langstitch.json
    └── langtailor-marketplace  # sign in, sync acquired plugins/connectors