WordPress is a content management system (CMS) that enables you to create a website or blog from scratch or to improve an existing website. WordPress is free and open-source software released under the GPL. You can use WordPress to create any kind of website you want, including a business site, a personal site, an eCommerce store design, or a blog. WordPress is free and open-source software released under the GPL, so you can use it to create a website for free.