# Copay NW.js

NW.js (also know as node-webkit) is an app runtime based on `Chromium` and `node.js`. To build desktop native application, Copay uses NW.js.

## Building Copay for OSX, Linux and Windows versions

**Requirements**

  - Install NW.js in your system from [nw.js](http://nwjs.io/)
  - To build Windows version: `brew install wine`

**Builder**

  - Try `grunt desktop` (*)

> (*) Sometimes you can get an gc error (in OSX). Just ignore it and try again.