title: There are BI / OLAP tools for MEAN Stack platform?
body: <p>Can anyone indicate me to a framework of <em>BI / OLAP</em> or at least a <em>Chart Engine</em>, preferably open source, which properly integrate with <a href="http://meanjs.org/" rel="nofollow">MEAN.JS</a> or <a href="http://mean.io/" rel="nofollow">MEAN.IO</a> platform in <em>SPA - Single Page Application</em> architecture?</p>
  
  <p>I know the <strong>keen.io</strong>. It is free in low transactional volume, but it is not open-source.</p>
  
  <p>The <a href="http://community.pentaho.com/" rel="nofollow">Pentaho</a> is a great BI tool, it's open-source, has <em>RESTful Services</em> and supports <em>MongoDB</em>, but your dashboard still employs Java on the server side and is one generation behind frameworks like <em>Node.js</em> and <em>Angular.JS</em> and they are only migrating now for <em>jQuery</em> and <em>Bootstrap</em>.</p>
  
  <p>Thank you in advance for any contribution.</p>