WordPress is the most popular and most used content management system (CMS) in the world. Today, there are 19,919,341 live websites using WordPress (source: https://trends.builtwith.com/cms/WordPress). WordPress started in 2003 with a single bit of code to enhance the typography of everyday writing and with fewer users than you can count on your fingers and toes. Since then it has grown to be the largest self-hosted blogging tool in the world, used on millions of sites and seen by tens of millions of people every day.
Why do we at DigitalWorks also use WordPress and not one of the other content management systems such as Drupal, Adobe CQ, Sitecore, Squarespace or Blogger?
We choose to be part of the ever-increasing network of WordPress supporters because it is open source. This means the source code is available to everyone to study, change and redistribute. Yes, even you can jump in and participate. WordPress was created by and for the community. And that is important, because an open source network attracts many developers who constantly improve the code and create additional products to keep improving the experience for everyone.
WordPress started as a blogging system, but it has evolved into a full content management system, limited only by your imagination. WordPress was born out of a desire for an elegant, well-architectured personal publishing system built on PHP and MySQL and licensed under the GPLv2 (or later). It is the official successor of b2/cafelog. WordPress is fresh software, but its roots and development go back to 2001. It is a mature and stable product. You can read more about WordPress here: https://wordpress.org/about/.