Eclipse IDE is a popular integrated development environment used primarily for Java programming, though it supports various other languages through plugins. It provides tools for code editing, debugging, and project management, making it easier for developers to write and test their software. One of the key features of Eclipse IDE is its extensibility, allowing users to add functionalities through a wide range of plugins. This flexibility makes it suitable for different types of development projects, including web applications and mobile apps, catering to both beginners and experienced programmers.