WordPress.org is an open-source content management system (CMS) that anyone can use for free. In simpler terms, it’s a software solution you can download and host on a webserver to create, manage, and modify content on a website. The CMS is just the base of the website, though ⁠— the creating, managing, and maintaining part of the website is on you. WordPress.com is a website-building and publishing service owned by a company called Automattic. It’s a managed hosting platform built specifically for WordPress(.org) sites.