It’s been a while since I’ve worked on enBot (December ’05, actually), but I still get people downloading it. It’s no less stable now than when it was last updated, I just haven’t seen a lot of need for changes to it.
I’ve published the source on Google Code, with the hopes that it will be more accessible to more people this way. I still consider it an Active Project, and will make any fixes needed, should the need arise.
I have also converted the development history to a series of Mercurial change logs. Those are also visible on the Project page, along with the documentation extracted from the README file, published on the suitable wiki pages (see the pages on Writing Modules and Installing Modules).