Javadoc linksource option: Creates an HTML version of each source file (with line numbers) and adds links to them from the standard HTML documentation.
Sorcerer: Sorcerer is a source code cross reference generator for JDK 6.
Java2html: Java2Html converts Java source code to HTML, RTF, TeX and XHTML.
Forrestdoc: Forrestdoc is a Javadoc/Source code/Documentation management system. A Maven plugin was created in the sandbox.
