The main function of an Integrated Development Environment (IDE) is to provide developers with a comprehensive platform for writing, testing, and debugging code. An IDE typically includes a code editor, compiler, debugger, and other tools that streamline the software development process. By integrating these components into one application, developers can manage their projects more efficiently and enhance productivity. Popular IDEs like Visual Studio, IntelliJ IDEA, and Eclipse offer features such as syntax highlighting and code completion, which facilitate easier coding and reduce errors.