Consider greenfoot as a combination between a framework for creating two-dimensional grid assignments in Java and an integrated development environment (class browser, editor, compiler, execution, etc.) suitable for novice programmers. While greenfoot supports the full Java language, it is especially useful for programming exercises that have a visual element. In greenfoot object visualisation and object interaction are the key elements.

Guido van Robot, or GvR for short, is a programming language and free software application designed to introduce beginners to the fundamentals of programming. GvR runs on Windows, Macintosh, and GNU/Linux, in a variety of languages! It's great in both the classroom and the home as a way of introducing people to the basic concepts of programming.

KTurtle is an educational programming environment that aims to make learning how to program as easy as possible. To achieve this KTurtle makes all programming tools available from the user interface. The programming language used is TurtleScript which allows its commands to be translated.

Have fun and make games, or hack your homework using Ruby! Just tell your parents or teachers you're learning Ruby programming... ;) Free and works on any computer.

Kojo is a desktop based software-application that runs on Windows, Linux, and the Mac. Kojo is based on ideas derived from Logo, Processing, and The Geometer's Sketchpad.

Processing is an open source programming language and environment for people who want to create images, animations, and interactions. Initially developed to serve as a software sketchbook and to teach fundamentals of computer programming within a visual context, Processing also has evolved into a tool for generating finished professional work. Today, there are tens of thousands of students, artists, designers, researchers, and hobbyists who use Processing for learning, prototyping, and production.

ROBO is a new and very simple educational programming language that will familiarize you with the basics of computer science by programming your own robot. In addition to an introduction into popular programming techniques, you will also gain insight into areas such as robotics and artificial intelligence.

Scratch is a new programming language that makes it easy to create your own interactive stories, animations, games, music, and art -- and share your creations on the web.

Children use Etoys to make their own models, stories, and games, which keeps them engaged because it's a lot of fun. But Etoys isn't just child's play. It's a highly effective way to teach math, science, and language arts, although many children won't realize this. Instead they'll stay immersed in discovery, reaching eagerly for each new idea, making their lessons more meaningful than with a 'face-front' approach.

Create iOS and Flash games with StencylWorks on your Mac & PC. With or without code.

Laby is a small program to learn how to program with ants and spider webs. You have to move an ant out of a labyrinth, avoid spider webs, move rocks, etc. Using Laby, you can learn OCaml, Python, C and Java. Other bindings can be added later to support new programming languages.

xKarel is a game to learn structured programming. You manipulate with the robot Karel using simple programing language. Robot knows any elemetary commands. You learn robot more commands. Any new command is small structured program.