YUIDoc
YUIDoc is a Node.js application used at build time to generate API documentation for JavaScript code. YUIDoc is comment-driven and supports a wide range of JavaScript coding styles. The output of YUI Doc is API documentation formatted as a set of HTML pages including information about methods, properties, custom events and inheritance for JavaScript objects. YUIDoc was orignally written for the YUI Project; it uses YUI JavaScript and CSS in the generated files and it supports common YUI conventions like Custom Events. That said, it can be used easily and productively on non-YUI code.