Blogging is one of the most popular forms of publishing online today. While most content management systems can easily produce a blog, standalone blogging software is generally more tailored and focused to the task. There are dozens of popular, stable and secure open source blogging tools available. Blogging can allow organizations to engage with their customers and clients, draw traffic, and increase repeat visits through the regular publishing of new content.
Wordpress
The most well-known blogging software available. The open-source Wordpress powers millions of blogs online and is used by a wide variety of users - from single person personal blogs to corporate.
Moveable Type
While technically open source, Moveable Type has a stricter licensing model. Moveable Type is free to download and use for developers, single non-corporate bloggers, and non-profits. Support is offered at cost along with a Pro version of the software.
Apache Roller
From the creators of the popular open-source web server comes Roller, a multi-user enterprise blogging server built on Java and is in use at companies like Sun and IBM.
Mephisto
Built on the Rails open source famework comes Mephisto. Used by many Rails enthusiasts, it is a feature complete blogging engine that easily manages posts, comments, rss, media and more.