Javadoc classes from the com.sun.javadoc package - Javadoc tool come with the Sun JDK and cannot be redistributed
YOM - Yet (Another Document) Object Model
QDox - QDox is a high speed, small footprint parser for extracting class/interface/method definitions from source files complete with JavaDoc @tags. It is designed to be used by active code generators or documentation tools.
XJavaDoc - The XJavaDoc engine is a complete rewrite of Sun's JavaDoc engine that is faster and more suited for XDoclet (although it is completely standalone). It scans java source code and makes information about a class available via special java beans that are part of the XJavaDoc core. These beans provide the same information about a class as Sun's JavaDoc API, and some nice extra features.
xdoclet-xjavadoc -
xdoclet-xjavadoc-uc -
ashkelon -