I'm the guy who probably is the official contact for client-related stuff. I don't really deal too much with the web stuff, though, so I can't really tell you which way to go about updating the clients page.
I wrote LogJam, the Unix/GTK+ client, and I'm currently working on a Win32 client to replace the existing one.
(Major goals for that include a more professional-looking UI, no crashing bugs, and no more dependency on MFC. There are a lot of new features, of course.)
I also wrote a bunch of trial utilities that seem to be still floating around.
- ljupdate (which seems to be the name of the emacs one, too) was a simple Windows tray deal that flashed when your friends list updated. It was more an implementation of the protocol for testing purposes, as that protocol was later implemented into the official Windows client.
- Then, there was an export utility, which was a test of the syncitems protocol. It exported to XML using the LiveJournal DTD, as a test of the feasibility of actually exporting a journal and the DTD.
I haven't had much time to work on any of that stuff lately, though, because I'm also maybe the second-level guy at LiveJournal.
I don't like programming for Windows, but I do it because I have an eye for detail and I'm much better with C than Brad is. (He writes C like a Perl programmer, while I write Perl like a C programmer.)
Other interests of mine include Python. I've written some Python-related LJ utilities, too.
Most of the miscellaneous stuff is cataloged at this site: http://neugierig.org/software/livejournal/ , though that site is pretty out-of-date.
I'm currently downloading another copy of Visual Studio 6 in the background, and I hope to resume work on the Win32 client in the coming weeks.