comprehensive blog engine: b2evolution

b2evolution is probably the most comprehensive blog engine you can find!

It includes almost any feature you could expect from a blog tool, and more ! Check out the features, not to mention third party plug-ins!

Plus, it's free (instant download), it's open-source (GPL), it runs virtually anywhere (PHP/mySQL) and it's available in many languages!

http://www.b2evolution.net/

b2evolution runs on http://www.blog.de