IntelliJ IDEA is the leading integrated development environment that makes Java and Kotlin development a more productive and enjoyable experience. It helps you produce high-quality code more efficiently, provides everything you need out of the box, and takes care of routine tasks so you can stay focused on the bigger picture. IntelliJ IDEA comes in two editions: ■ IntelliJ IDEA Ultimate – the full-featured commercial version for Java and Kotlin, web, and enterprise development. ■ IntelliJ IDEA Community Edition – the free version, built on open source, for pure Java and Kotlin development.