DOC++

A multi-platform open source automatic document generator that supports C, C++, Java and IDL and has output support for HTML and TeX. It was used a bit on OS/2 around the turn of the century as it compiled cleanly by using the EMX toolkit, but even though it officially supports only Microsoft Windows, Linux and Solaris it has such a generic use of programming interfaces that in general it compiled on anything that had a reasonable POSIX support and a GCC port including not only most UNIX systems but also DOS (emx), BeOS and OS-9.

It is getting on a bit in years and has not seen any updates in more than a decade but is functional and considerably smaller than many better supported tools of a similar ilk.

Features

Hierarchically structured documentation
Automatic class graph generation (as Java applets for HTML)
Cross references
High end formatting support including typesetting of equations

Version

DOC++ v3.2 (1999)
DOC++ v3.4.10 (Dec 2002)

There are some newer commits in the SourceForge CVS repository, note that those newer commits are not present in the GitHub repositories of this software.
Prerequisites

flex 2.5 or higher

Links

Licence

Open source software licensed under the GPL v2

Authors

Roland Wunderling (Original author)
Malte Zöckler (Original author)
Dragos Acostachioaie (Maintainer 2001~2003)