There is a major difference between WordPress.org and wordpress.com. The former is an open-source software platform while the latter is a website hosting service provider. While both allow users to edit system files, wordpress.org offers users full control over the system’s source code and files. In addition, the GNU General Public License (GPL) license makes it possible for users to make various modifications to the system. With a basic knowledge of HTML and CSS, even a non-technical person can make changes to the theme, customize the appearance of the website, and even add their own ads to the site.