Simple-Product-Browser is a project mainly written in JavaScript, it's free.
Sample project for getting started with Ext Designer. This project file can be used with
Use this sample project to build a simple product browser in Ext Designer. This project is geared towards showing you the basics of Ext Designer's drag and drop interface for creating Ext JS applications, and how to implement data stores.
Follow along by watching the screencast.
For more information, please see Sencha.com/designer.