WordPress is an open-source content management system (CMS) that was first released in 2003. It is one of the most popular website builders on the internet with over 60 million websites running on WordPress.
The CMS helps create a website by providing a framework for designing and managing content. It also enables users to create and maintain their own blogs, as well as many other types of websites.
WordPress is free to use and can be downloaded from wordpress.org or any other site that offers it.