*NOTE: There is currently a security vulnerability in the current version of GeBlog. I am contemplating restarting the projectm but for now please don't use it in it's current 0.1 version!*
GeBlog is a weblog (blog) system written in PHP inspired by PHP-Nuke and Postnuke. It is an attempt to replicate some of the functionality of a normal CMS, while keeping a simple blog interface with template capabilities.
Very good Software.