AtomEnabled

Blosxom (pronounced 'blossom') is a lightweight yet feature-packed weblog application designed from the ground up with simplicity, usability, and interoperability in mind.

Movable Type is a powerful, customizable publishing system which installs on web servers to enable individuals or organizations to manage and update weblogs, journals, and frequently-updated sites.

Xaraya is extensible, open source CMS software written in PHP and licensed under the GNU General Public License.

WordPress is a state-of-the-art semantic personal publishing platform with a focus on aesthetics, web standards, and usability.

Drupal is an open-source platform and content management system for building dynamic web sites offering a broad range of features and services including user administration, publishing workflow and...

Nucleus allows you to easily maintain your own weblog(s) on your own server. It offers a system that is easy to install, but still offers maximum flexibility.

A powerful multi-user, open source, Java-based weblog software package with support for templating, plugins and remote administration.

A server-side RSS and Atom aggregator. Requires PHP and MySQL. Stay up to date anywhere!

Serendipity is a PHP-weblog system: Standards compliant, feature rich (RSS/Atom/Track-/Pingbacks/...) and OpenSource. It's constantly under development trying to make the best PHP blog on the net.

XHP - eXpandable Home Page is an easy to install, easy to use, easy to expand personal home page software (CMS) written in PHP and using MySQL as the database engine.