Charts

• http://www.chartjs.org/
• http://www.jscharts.com/
• http://www.jqplot.com/

QR

• http://d-project.googlecode.com/svn/trunk/misc/qrcode/index.html
• https://github.com/jeromeetienne/jquery-qrcode
• https://code.google.com/p/jsqrencode/
• https://github.com/yyx990803/QR.js