At some point could someone update http://www.livejournal.com/download/ to point at one or all of
The first is the development community. The second is the SwingUI (applet) which works with the Java Plug-in, and the third is the AWT UI (applet) which should work with any browser supporting Java (so if only one is linked, the last one is probably the best).
Everything is still under development, but seems to be pretty stable, and offers at least as many features as many of the other clients listed (at least from what the feature matrix thing says) and (yay Applets) doesn't require a download.
Also, I finally got around to making a release of the back-end source (no UI source at the moment). More info can be found in pepys_dev.