MOOzilla is a MOO client for Mozilla.

Did you know Mozilla was an application platform? We just need to see more apps beyond the standard set that come with it (like the browser, email, composer, IRC, and calendar [beta] aren't impressive enough). Many are comparing it to Emacs in its cross-platform versatility and power. Others are saying XUL in Mozilla could replace quick'n'dirty programming languages like VisualBasic as a way to get things done. Still others are complaining that XUL is too cumbersome to get anything done. Nevertheless, it's fun to think about the cross-platform possibilities.

Creating Applications with Mozilla is a free online book, and comes in O'Reilly dead-tree form as well. I'd love to find a reason to learn to program Mozilla. I have a couple of ideas for non-web apps, though thinking in terms of web applications all these years makes it difficult to imagine solving problems any other way. Emacs Lisp might be more useful to me at the moment, anyway...