University of Kent
Greenfoot
FreeGreenfoot: Easy Java for Games and Simulations
Windows
BlueJ
FreeBlueJ: Ideal for Introductory Java Learning
Windows
BlueJ for Debian and Ubuntu
FreeComprehensive Overview of BlueJ for Debian and Ubuntu
Linux
Greenfoot
FreeGreenfoot: A Free Educational Java Environment
Mac
BlueJ for Linux
FreeBlueJ for Linux: A Comprehensive Java Development Tool
Linux
BlueJ
FreeBlueJ: A Beginner-Friendly Java Development Environment
Mac