http://bernii.github.io/gauge.js/
A bit nostalgic to see the crossed-over “js” replaced with “coffee”. Tells me it’s not a particularly new library.
It's basically the same thing, just fully radial instead of just a gauge.
Here's a working example: https://jsfiddle.net/andsens/mLA7X/ (click in the middle of it to animate to another random percentage)
