I found this blurb about an open source weblogging software package by linking from connexions.  Anyway, it's new to me.

What is Greymatter?

Greymatter is the original opensource weblogging and journal software. With fully-integrated comments, searching, file uploading and image handling, completely customisable output through dozens of templates and variables, multiple author support, and many other features—while having perhaps the simplest installation process and easiest-to-use interface of any program offering this level of functionality—Greymatter permanently raised the bar for weblogging and journaling, and it remains the program of choice for tens of thousands of people around the world.