Being dissatisfied with ext-doc I wrote an alternative documentation generator for ExtJS.
* JsDuck at Github
The highlights of JsDuck are:
* Comments can be formatted with Markdown instead of HTML.
* A lot more information is inferred from code - so you can keep your comments DRY.
While doing this, JsDuck aims to be backwards-compatible with ext-doc. So comments written for ext-doc will display about the same under JsDuck, but not the other way around.
It's still in early beta, so there's a lot of stuff in my TODO list, but I've already found it quite satisfying to use - not having to type @class and @extends at all have greatly increased my refactoring speed, and the reduced boilerplate code has made me less reluctant to create small little classes.
Tell me what you think.
PS. While developing it I discovered several bugs in ExtJS doc-comments. I've created a list of them for those who care to fix.