Sexy charts can really make a good data driven UI that much better. One thing that designers struggle with is creating sexy charts and graphs that their developer counterparts can actually implement without having to write it all from scratch.
Chart.js, from Nick Browne, makes it easy to visualize your data using HTML's
<canvas> tag and create great looking charts that are fully customizable. With 6 charts to choose from -- you're able to visualise your data with various animated charts that look great on retina displays too.