http://justgage.com/ – gage

http://www.rgraph.net/examples/meters-and-gauge-charts.html – gage

http://www.jqplot.com/

http://www.jqplot.com/deploy/dist/examples/meterGauge.html – gage

https://github.com/rendro/easy-pie-chart – gage

http://benpickles.github.io/peity/

http://jpgraph.net/

http://elycharts.com/examples

http://www.flotcharts.org/

http://www.highcharts.com

http://anthonyterrien.com/knob/

Refrence – list of free

https://cube3x.com/37-free-jquery-or-javascript-chart-libraries/