The Arduino team have created a new tutorial on how to migrate all your code from the desktop application to the new Arduino IDE Web Editor, check it out here.

Arduino Web Editor is designed to take the headache out of the development process: your Sketchbook is in the Cloud, available from any device and backed up. Simply save a .ZIP file of your local ...

For beginners learning to program Arduinos, a web-based, fully networked developer environment called Codebender could drastically reduce the learning curve.

Arduino microcontrollers have added Python to the range of compatible programming languages. Others can be used, and not just Arduino's own IDE app.