BlueJ

Codecademy is the easiest way to learn how to code. It's interactive, fun, and you can do it with your friends.

RubyMonk will teach you the syntax, idioms, and even the philosophy behind effective Ruby use in an interactive, Codecademy-like interface. As of now, RubyMonk is completely free to use.

Code Avengers is the fun, easy way to learn Javascript, the computer programming language of the web. Learners of all ability will enjoy the free interactive online lessons. Be a …

The JavaScript Playground is a blog centered around short, specific posts aimed to improve a reader's knowledge of JavaScript, either written or provided as a screencast. Posts on JSP are …

Code.org is a non-profit whose goal is to expose all students to computer programming. We believe that computer programming is a liberal art; it's something EVERY student in the world …

Educational software designed to make learning programming easy and fun. Interactive Visual World Greenfoot teaches object orientation with Java. Create 'actors' which live in 'worlds'...

Teaching computer science to beginners with no prior background, and providing them with the help they need along the way. We work with individuals as well as schools all over …

Coderbyte is a place built for anyone to practice and perfect their programming skills. Challenges are added almost every day so you can work on applying your algorithmic thought process …

Since 2001 Cocoa Dev Central has been one of the most popular sites devoted to Mac OS X programming

The Hungry Academy is a unique and game changing five-month learning experience. It's your opportunity to push yourself to the limits. At Hungry Academy you’ll: - Work with and be …

Crunchy is an application that formats and delivers html-written Python tutorials inside a browser window, adding interactive elements and snazzy navigation.