zOxygen is a "free of charge" Windows based utility that wraps
around the Doxygen documentation tool. It is designed to simplify
the document creation process.

  http://www.zeusedit.com/zoxygen.html

The utility uses Doxygen tool to produce documentation from source
code and can produce documentation for  C++, C, Java, IDL, to some
extent Objective-C, PHP, C# and D.

Jussi Jumppanen
http://www.zeusedit.com