mp_doccer is a tool that travels C code files, and extracts specially marked information to build documentation. This documentation can be generated in HTML, man pages, or an executable shell script. The markup is very similar to that in the Linux 2.4.x kernel sources. mp_doccer is a component of the Minimum Profit Text Editor.
mxml2man is a modified version of Apple's xml2man script that creates man pages starting from XML files. It not only supports all the XML files that are supported by xml2man, but extends the format to support more feature for advanced man page generation. The build process is done with autotools instead of using the provided makefile from Apple.
Palmdoc, inspired by javadoc, is a Perl program intended to help Palm programmers document their projects. It takes a projectname as input and walks along the project files, generating an HTML document from the code and the comments. While palmdoc has some strict rules, it helps the programmer maintain a clear document-structure and minimizes the effort of having to write seperate documentation for each project.