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Native VR/AR/XR engine for JavaScript πŸ¦–
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πŸ•Ά Native VR and AR engine for JavaScript πŸ¦–

Site β€” Docs β€” Discord β€” Slack β€” Twitter β€” Email List


Hands Reality Tab Live Reload Magic Leap Tutorial Reality Tab

Reality Projection with HTC Vive and Magic Leap Emukit Various Exokit Apps

Find more examples here and on YouTube.


This project enables developers to build XR experiences using the same code that runs on the web. Exokit engine is written on top of Node and emulates a web browser, providing native hooks for WebGL, WebXR, WebAudio, and other APIs used in immersive experiences.

πŸ‘“ Exokit targets the following platforms:

  • Desktop VR (Steam compatible)
  • Magic Leap
  • Mobile AR (ARKit / ARCore) *
  • Mobile VR (Daydream / Gear VR) *
  • Standalone VR (Oculus Quest/Go) *

* not supported yet

πŸ”Œ Since Exokit supports anything that runs on the web, it powers experiences built with:

  • Three.js
  • Unity
  • Pixi.js
  • Babylon.js
  • A-Frame
  • Custom WebGL frameworks
  • WebAssembly, TypeScript, and any language that transpiles to JavaScript

πŸ‘ Why Exokit?

  • You want your WebGL/WebXR to run fast.
  • You want the hot new web APIs.
  • You want to add your own integrations -- including native -- into a browser environment.
  • You want a lightweight browser as a hackable node module.
  • You want to combine the web with a 3D engine like Unity.

πŸ‘Ž Why not Exokit?

  • You're looking for a traditional "web browser".
  • You don't care about 3D or mixed reality.
  • You're looking for strict and/or legacy standards support.

πŸ“– Manifesto

  • The future is immersive. The web is the best application platform. Javascript is the best ecosystem.
  • Content should be hardware agnostic. Tomorrow will have different hardware. VR and AR should be compatible.
  • It's not possible to do both 2D and 3D well. We don't do 2D. We can use an external 2D browser.
  • Use your favorite game engine. Exokit is not a game engine.
  • Legacy browser design choices don't make sense in XR.
  • Exokit empowers and connect apps, even (especially) if they aren't designed to cooperate.
  • Apps should run in "reality tabs", layers of reality that blend together.



Download for current OS

Run a WebXR site (desktop)

exokit # start A-Painter in Exokit

Magic Leap

Download for Magic Leap

Run (Magic Leap device)

mldb connect # mldb needs to be connected; see MLDB documentation
mldb install -u exokit.mpk # downloaded or built package
mldb launch com.webmr.exokit -v "ARGS=node --experimental-worker . file:///package/examples/hello_ml.html" # or URL to load
mldb log exokit:*


Exokit is a Javascript Node.js module.

C++ bindings hook into WebGL, WebXR, Magic Leap, Leap Motion, and various other device APIs.

const {window} = require('exokit')() to get an immersive browser in another project.

Exokit runs on Windows, macOS, Linux (x64), Linux (ARM64), and Magic Leap (ARM64).

Web API support

  • HTTP/S
  • HTML5
  • <script>
  • DOM
  • WebGL
  • WebXR
  • WebVR
  • WebRTC
  • Canvas2D
  • WebSocket
  • Web Workers
  • <img>, <audio>, <video>
  • WebAudio
  • Keyboard/Mouse events
  • Gamepad API
  • <iframe>
  • HTML layout
  • HTML rendering
  • CSS
  • Legacy APIs

Hardware bindings

  • OpenGL
  • OpenVR (Steam VR)
  • Magic Leap
  • Leap Motion

Local Development

See full building instructions in

git clone
cd exokit
npm install
node --experimental-worker . <url> # or node --experimental-worker . -h for home


Uses ndb.

npm run debug

Then in the console, input:

let window = await require('./src/').load(yourUrl);

Now you have a handle on the window object as you test your application, and you can set debugger breakpoints, inspect memory, profile CPU, etc.


For questions and support, ask on StackOverflow.

Stay in Touch


Get involved! Check out the Contributing Guide for how to get started.


This program is free software and is distributed under an MIT License.

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