http://www.asymptomatic.net/blogbreakdown.htm
http://slashdot.org/article.pl?sid=04/05/14/1314256
http://www.opensourcecms.com/
http://www.b2evolution.net/about/evolutionofb2.html
http://www.textpattern.com/
http://bit5blog.sourceforge.net/
http://www.drupal.org/
http://sourceforge.net/projects/simplog/
http://sourceforge.net/projects/php-blog/
http://sourceforge.net/projects/bblog/
http://www.blosxom.com/