A code editor is a software application designed for writing and editing source code. It provides features like syntax highlighting, which colors different parts of the code to make it easier to read, and auto-completion, which suggests code snippets as you type. Code editors are essential tools for programmers and developers, helping them create and manage their projects efficiently. Many code editors support various programming languages, such as Python, JavaScript, and C++. Some popular examples include Visual Studio Code, Sublime Text, and Atom. These editors often allow for customization through plugins and extensions, enhancing their functionality to suit individual coding needs.