WordPress is the engine that drives over 150 million blogs on the World Wide Web. It is open source software that provides access for developers to create add on-ons (plugins) that increases its functionality for users with a few clicks. It was first released on May 27, 2003, by founders Matt Mullenweg and Mike Little. At last count there were over 22,000 plugins available to download.
Written by Jeff Bullas
Here is an infographic that gives you an overview that sums it up in a glance or two.
Read more at http://www.jeffbullas.com/#6x5F6fUDWPtUFKOu.99