Developer(s)
WordPress Foundation

Initial release
May 27, 2003

Stable release
4.1 (December 18, 2014)

Preview release
4.1 Beta 1 (November 14, 2014; 3 months ago)

Development status
Active

Operating system
Cross-platform

Platform
PHP

Supported Databases
MySQL, MariaDB

Type
Blog software

License
GNU GPLv2+

Website
wordpress.org

WordPress is the number one web building environment in the world. WordPress.com allows you to start a web site free with the option of adding premium upgrades.

WordPress is a free and open-source blogging tool and a content management system (CMS) based on PHP and MySQL.  Features include a plugin architecture and a template system. WordPress was used by more than 23.3% of the top 10 million websites as of January 2015. WordPress is the most popular blogging system in use on the Web,  at more than 60 million websites.