WordPress
The self hosted version of WordPress is used to power approximately 25 million websites and this growing at an incredible rate. WordPress has gone from a simple blogging platform to the best all-round content management system and it’s being adopted far and wide.
I’ve been building websites on WordPress since 2007 and have created many WordPress plugins, some of which are publicly released (see below). I’ve also written articles on how to develop for WordPress, how to hack it to improve it’s functionality and shared my opinion on things in the WordPress ecosystem.