University of Kent
Greenfoot
FreeGreenfoot: Easy Java for Games and Simulations
Windows
BlueJ
FreeBlueJ: Ideal for Introductory Java Learning
Windows
BlueJ for Linux
FreeUse an easy-to-use teaching environment for the Java language.
Linux
BlueJ for Debian and Ubuntu
FreeUse an easy-to-use teaching environment for the Java language.
Linux
Greenfoot
FreeEasy development environment for Java games & animations.
Mac
BlueJ
FreeInteractive Java development environment with UML.
Mac