An easy to use weblog application which uses php and MySQL.

Open source blog system for people who have access to a provider with php and mySQL capabilities.

Integrates blogging and forum features to create a communal content management system.

Open source microblogging application, aiming to be an alternative to Twitter. Provides a list of existing servers using this software, documentation and information for developers.

A multifeatured weblog editor for Mac OS X (10.3 or higher) by Red Sweater Software. Site includes screenshots, features list, and trial download.

Free, open-source PHP/MySQL weblog system. Includes calendar navigation, "edit this page", searching, channels, RSS, XML, tell-a-friend, and spider-friendly URLs.

Easy-to-use blogging tool with mapping system designed specifically for travelers. Post text and photos. Includes a notification system to let your friends know when an update is posted.

Small weblog engine written in Bash.

Free, open source weblog program that focuses on ease of use.

A PHP/SQL blogging tool which resides on your webserver. Includes multiple weblog capabilities, and RSS syndication.