by FILIGRIS WORKS DocFlex/Javadoc is both a multi-format Javadoc Doclet and a tool for development of Javadoc-based high-quality Java API documentation generators in various output formats, which by their quality and complexity are equal or exceed the standard Javadoc
by Rich Feit CppDoc generates HTML documentation for your C++ classes, based on your source code and special comments embedded within it. It supports JavaDoc tags (@see, @return, etc.) and can produce JavaDoc-style output.