There are two parts to WordPress. There’s the open source WordPress.org project and a commercial business called WordPress.Com which is part of Automattic.
Matt Mullenweg was the co-founder of WordPress and is the sole founder of Automattic.
Last month Mullenweg started a verbal fight with a company called WP Engine. The spat has now gone well beyond words. It has already changed the way many see WordPress and it looks set to alter the course of the web publishing software’s future.