JustGage is a handy JavaScript plugin for generating and animating nice & clean gauges. It is based on Raphaël library for vector drawing, so it’s completely resolution independant and self-adjusting. It works in almost any browser – IE6+, Chrome, Firefox, Safari, Opera, Android, etc.

JustGage auto-adjusts to the size of containing element. And to the screen zoom level. And screen density. Not digging default style? Then mock your own. JustGage features bunch of styling options including gauge width, gauge color and shadow, gauge level colors, colors for title, value, min & max etc.

Requirements: JavaScript Framework
Demo: http://www.justgage.com/
License: MIT License