MySQL is the backbone of some of the most popular free software web applications, including WordPress, Drupal and StatusNet. Its phenomenal ability to scale is unmatched — being the optimal choice for anything ranging from a personal blog to an international eCommerce site.
Thanks to the contributions of developers from around the world, MySQL has evolved into a mature database server that is a mainstay in the free software world. MySQL is not the only free sofware database — others include SQLite and PostgreSQL. While these projects differ in many ways, they all work together for free software.