An HTML editor is a software application designed to create and edit web pages using the HTML (Hypertext Markup Language) code. These editors provide a user-friendly interface that allows users to write and modify HTML code easily, often featuring syntax highlighting, code completion, and error detection. Some popular HTML editors include Adobe Dreamweaver, Notepad++, and Sublime Text. Many HTML editors also support additional web technologies, such as CSS (Cascading Style Sheets) and JavaScript, enabling developers to design and implement more complex web applications. They can be categorized into two types: WYSIWYG (What You See Is What You Get) editors, which allow users to design visually, and text-based editors, which focus on coding directly.