Anchor is a super-simple, lightweight blog system, made to let you just write.
b2evolution is an open-source blog/CMS engine with a focus on multiple blogs support, including evolved blogs like Photo Albums, Community Forums or Online Manuals.
Blog.com Write your ideas, now. You'll be up and running in under a minute. Posting new content can be done in two clicks. Life is overcomplicated as it is. We add simplicity.
Free weblog publishing tool from Google, for sharing text, photos and video and more.
The Easiest Website Builder -- Drag n Drop Editor, Free Stock Photos, Fonts, and More. Bravesites / Bravenet
Dotclear is an open-source web publishing software published in 2003 by Olivier Meunier. A one man's project at first, Dotclear soon gathered a team comprising different personalities with various backgrounds. The project's purpose is to provide a user-friendly tool allowing anyone to publish on the web, regardless of their technical skills.
Drupal is an open source content management platform powering millions of websites and applications. It's built, used, and supported by an active and diverse community of people around the world.
eggBlog is the free php & mysql blog software package, allowing you to create your own online website, journal or weblog (blog) using your own web-space.
ExpressionEngine is a software development company based in Bend, Oregon, which primarily develops applications written in PHP. The company is privately owned and to date has not accepted any venture capital funding.
FlatPress is a new blog engine. Written from scratch, it features same plugin interface as WordPress and plain compatibility with SimplePHPBlog stored entries. Plus, a template based theming engine, and full conformance to web standards and usability.