Spket IDE is powerful toolkit for JavaScript and XML development, version 1.5.11 add ExtJS support.

The flash demo show you how to setup Spket IDE for ExtJS development:
http://www.spket.com/demos/extjs.html

Currently it support Ext 1.1 Stand-alone(Ext Base + Everything target defined in ext.jsb)

Please visit http://www.spket.com/ for more information...