W3Schools

W3Schools is a web developers information website, with tutorials and references on web development languages such as HTML, CSS, JavaScript, PHP, SQL, and JQuery, covering most aspects of web programming.

Free Web

tutorialspoint

Free tutorials and reference manuals with examples for Computer Fundamentals, JSF, C Sharp, Flex, GWT, PL/SQL, Eclipse, JUnit, Pascal, Maven, Scala, Spring, Struts 2, HTML5, ANT, iBATIS, Django, JSP, JAVA, JDBC, AJAX, WAP, SQL, MySQL...

Free Web

Code School

Code School teaches web technologies in the comfort of your browser with video lessons, coding challenges, and screencasts.

Freemium Web

Code.org

Code.org is a non-profit whose goal is to expose all students to computer programming.

Free Web

Playir

Create your own mobile apps & 3D multiplayer games with our super-easy design tools for iOS, Android, Windows Phone and HTML5! Less programming, more playing.

Freemium Android iPhone Android Tablet iPad Windows Phone

BlueJ

BlueJ is an Integrated Development Environment for Java, developed mainly for educational purposes, but also suitable for small-scale software development.

Free Open Source Mac OS X Windows Linux Raspberry Pi

Coderbyte

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 on any problem you want at anytime.

Freemium Web

CodeHS

Teaching computer science to high school by providing web-based curriculum, teacher tools and resources, and professional development.

Commercial Web

TutsPlus (Tuts+)

Tuts+ teaches creative and technical skills to millions of people worldwide. Tuts+ teaches tutorials, courses, articles, eBooks, news and community for topics such as design, development, photography, audio, video, computing, and craft.

Commercial Web

SitePoint

Learn Web Design and Development with SitePoint tutorials, courses, and books - HTML5, CSS3, JavaScript, PHP, mobile app development, Responsive Web Design.

Freemium Web

CodeAvengers

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 Coding Superhero with Code Avengers

Freemium Web

Famo.us University

Famo.us University includes live coding lessons, tutorials, and discrete examples tied to our reference documentation. In Famo.us University, each lesson lets you live code in Famo.

Free Open Source iPhone Web

CodeAbbey

This resource is created to provide short programming problems for all who wants learn programming and improve their programming skills, but who could not easily find enough tasks for practice.

Free Web

RubyMonk

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.

Free Web

Orange Pi

It’s an open-source single-board computer. It can run Android 4.4, Ubuntu, Debian, Rasberry Pi Image, it uses the AllWinner H3 SoC, and has 1GB DDR3 SDRAM.

Free Open Source Linux Android

Alice

Alice is an innovative 3D programming environment that makes it easy to create an animation for telling a story, playing an interactive game, or a video to share on the web. Alice is a teaching tool for introductory computing.

Free Mac OS X Windows Linux

Tutorialzine

Tutorialzine is a site dedicated to bringing you the coolest web development tutorials and resources.

Free Web

Codingbat

The online programming practice in java and python.

Free Web

Colobot

CoLoBoT is a free strategy game with open source code. You can program robots in it, in language called CBOT, which is based on C++ and Java, languages used by professional. Source code available here: https://github.com/colobot/colobot .

Free Open Source Windows

Topcoder

Topcoder provides members opportunities to demonstrate their expertise, improve their skills, and win cash, while helping real world organizations solve real world problems.

Free Web