Node.js compiler for use in the browser

 Browserify is a tool that allows developers to write Node.js-style modules
 that compile for use in the browser.
 .
 Browserify lets developers use require in the browser, the same way this is
 used in Node.js.
 Browserify provides also suitable replacement a built-in Node.js
 modules suitable for browser uses.
 .
 Node.js is an event-based server-side JavaScript engine.