WordPress is a open source blogging tool and a content-management system (CMS) based on PHP and MySQL. Features include a plug-in architecture and a template system.
WordPress is used by more than 18.9% of the top 10 million websites as of August 2013.
WordPress is the most popular blogging system in use on the Web, at more than 60 million websites.
What You Can Use WordPress For?
WordPress started in 2003 as just a blogging system, but has evolved to be used as full content management system and so much more through the thousands of plugins and widgets and themes