James Carr in Making extJS More Accessible to Java Developers:
With my recent interest in extjs, I was playing with the idea of making a Struts2/WebWork component library or a tag library to handle a lot of the boilerplate extjs code (i.e. creating layouts and such) but, luckily, discovered someone beat me to the punch!
I can definitely see how Ajax-with-IDE-code-completion would appeal to many developers. However, I do have to agree with James:
ExtTLD is published under GPL 3.0 license however restricts use by companies participating in animal abuse, such as animal testing laboratories etc.