A code editor is a special type of software designed for writing and editing computer programs. It provides features like syntax highlighting, which makes the code easier to read by coloring different parts of the code, and auto-completion, which suggests code as you type. Popular code editors include Visual Studio Code, Sublime Text, and Atom, each offering unique tools to help programmers work more efficiently. Using a code editor can significantly improve a programmer's productivity. These editors often support various programming languages, such as Python, JavaScript, and Java, allowing developers to switch between languages easily. Additionally, many code editors can integrate with version control systems like Git, making it easier to manage changes in code over time.