Animated Gauges With HTML5 Canvas: Gauge.js

Gauge.js is a slick script for creating animated gauges with JavaScript (Coffeescript) in HTML5 canvas.

The script is standalone (jQuery is supported but not required) and doesn't use any images or CSS.

It has 2 built-in interfaces (both looks very nice) and responds very well to value changes by animating the gauge.

There are options to set the animation speed, default/min/max values, colors and more.

To sum up, Gauge.js is a very handy script to visualize regularly changing (live) data.