Movable Type is a set of Perl scripts and MySQL tables concocted by Ben and Mena Trott. It’s been available for just a year. Mena explains:
Movable Type began as a hobby, a way to occupy time previously filled by, well, employment. We never imagined that Movable Type would become as popular as it is, nor could we comprehend the way that it would change our lives. The past year has been amazing. We have had an active role in shaping a medium that thrives on the personal voice while building an application that truly is a labor of love.
Like Blogger, Movable Type has a community of helpful users (some of them held my hand as I started my unix tinkering). But MT is more powerful than Blogger. I like its capacity to assign categories to posts — subjects like the web or this site.