Programr - http://www.programmr.com/

Programr

Learn and practice your coding right in your web browser with this interactive site. There are several ways you can use Programr to learn something new or brush up on coding you already know and love: visit the Training Labs, where you can practice programming by solving real world exercises, take on one of the coding Challenges, check out one of the 2000+ apps that have been made by other Programr users for inspiration, or enter one of the ongoing Contests. All of the information here is free, and a wide variety of coding languages from Java to SQL are offered.

 

java, C++, Python, C#, PHP, Ruby, Android, IOS, J2EE, JS, Ajax, Games, Flash, SQL, HTML/CSS

 

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