JodBlog is a fast, easy to use, easy to install PHP / MYSQL based blogging software.
Template driven - code and design are kept separate to facilitate web-design.
WYSIWYG (What You See Is What You Get) editors - adding blog entries is as easy as creating a word document; so even if you don't have any HTML experience you can create great looking pages (with pictures etc..).
Search engine friendly URLs - the keywords within a URL are an important component to getting good search engine rankings; Jodblog has a special option that can turn on that will automatically insert relevant keywords with in the URL e.g. your blog entry title.

The most comprehensive publishing platform. Features:
Lightweight, yet full-featured and easy to use
Powerful content management system
Dynamic search engine friendly pages
Various permission levels for posts
Supports multiple blogs, authors, user levels and profiles
Readymade language, theme and smiley packs
Built-in spam-figthing capabilities
Powerful backup/restore system
Written in PHP and backed by MySQL

BlogHoster was designed for web hosting companies or other community focused websites. The program allows you to create a full-featured weblog hosting service in which users can signup, choose/edit their template, write entries and comments, create a user profile, add
friends, etc. The entire visual frontend of the software is generic, so you can easily give it your website's look and feel. You can even have ads automatically inserted on your users' weblogs.

MobiLog! is a powerful standalone blogging tool that allows you to update a mobile weblog ("moblog") remotely using any email-capable device, such as a cellular phone. You can even send images from your camera phone and have them automatically posted to your web site - a great feature for both hobbyists and online journalists. Additional features include Atom syndication format support, automatic thumbnail creation (using ImageMagick), browsable entry archive, password protection for entry submission, and much more. Also, MobiLog! is themeable, so it is very simple to integrate it into any existing web site just by editing a file. Developed by Accliptic Technologies (creators of the powerful Accliptic Support help desk software), MobiLog! is an easy to configure and use - not to mention absolutely free - open source tool for those who wish to maintain a mobile weblog

Features:
installation wizard
multilanguage interface
CSS styles + HTML templates
CSS styles + HTML templates
very compact
RSS feed (with BBcode parsing)
search
IP logging for comments