Open Source
You can get a newer copy of the source at Source Forge. Our project name is JustJournal. This includes the server software, windows client (GPL2), unix client (BSD 2-clause), DashBoard widget (for OSX, BSD 2-clause), and GTK app.
Old Work
Windows client source for 1.41 release (under GPL)
Java client source
Here is a copy of the april 2005 snapshot minus the web page templates and configuration files. More will be added at a later time. This is released under the BSD license. First snapshot