WordPress first saw the light of day on May 27, 2003. The founders of this software are Matt Mullenweg and Mike Little. WordPress can be referred to as an online, open source site building tool based on PHP and MySQL programming languages. In more advanced terms it is called a content management system (CMS).
When WordPress was first launched it had several users but over time grew into the biggest and most popular CMS in the world. Today, WordPress is powering over 75 million websites. A research carried out in April 2016 shows that this content management system was used by more than 26% of the 10 million best-ranking sites.

What is WordPress?
WordPress is an online, open source website creation tool written in PHP. But in non-geek speak, it’s probably the easiest and most powerful blogging and website content management system (or CMS) in existence today. WordPress is highly customizable, and has literally thousands of plugin pieces of software so you can use your site for just about anything.
WordPress started in 2003 by Matt Mullenweg, WordPress has quickly become the world’s most popular content management system (CMS) platform. Some of the largest companies in the world such as Pepsi, Samsung and Ford use WordPress as their software to operate their sites.