BlueJ is described as 'Integrated Development Environment for Java, developed mainly for educational purposes, but also suitable for small-scale software development. It was developed to support the learning and teaching of object-oriented programming, and its design differs from other' and is a IDE in the development category. There are more than 25 alternatives to BlueJ for a variety of platforms, including Windows, Web-based, Mac, Linux and Android apps. The best BlueJ alternative is Visual Studio Code, which is free. Other great apps like BlueJ are Eclipse, IntelliJ IDEA, Apache NetBeans and MonoDevelop.