Blosxom
Blosxom
http://www.blosxom.com/
Drupal
Drupal
http://www.drupal.org/
Greymatter
Home of the weblogging software, greymatter.
http://www.noahgrey.com/greysoft
Blogbuddy
Blogbuddy
http://blogbuddy.sourceforge.net/
B2
b2
http://www.cafelog.com/
Easyblogs
Easyblogs
http://www.easyblogs.com/
Geeklog
Geeklog
http://www.geeklog.net/
Serendipity
Serendipity
http://www.s9y.org/
W.Blogger
W.bloggar news
http://wbloggar.com/
PMachine
pMachine
http://www.pmachine.com/
Pivot
Pivot
http://www.pivotlog.net/
Nucleus cms
Nucleus cms
http://www.nucleuscms.org/
WordPress
WordPress
http://wordpress.org/