I&#x27;ve looked into plot.ly and found the feature set pretty impressive, although I was not happy with the way they handled data. Now that it&#x27;s open sourced, I&#x27;ll definitely try to make use of it in practical data visualization applications.<p>That being said, I&#x27;m not 100% sold on interactive charts. Way too many libraries (Highcharts especially) break or function poorly on mobile devices, which is a serious problem in 2015. I&#x27;ll have to give plot.ly another QA audit.