Good grief, I don't want to have to learn a fourth language (HTML, wikitext, a
programming language, and now XML) to describe a project of mine. I'm already going to
have to build it and make a homepage for it.
If we simply use a wiki page, actual users of the tools can help document their existance,
something we can't always rely on absent or lazy or not-so-inclined or
too-busy-building-tools toolmakers to do.
I've been bold and put up a list of all known projects at:
http://meta.wikimedia.org/wiki/Toolserver/Projects
...feel free to update when you post a new project.
-B.