IDE
Get flash to fully experience Pearltrees
Komodo Edit is a Free Open Source Editor for Perl, Python, Tcl, PHP, Ruby & Javascript
Komodo Edit is a lean editor with a sleek interface. You'll enjoy excellent coding in many web languages, including Python, PHP, Ruby, Perl, HTML, CSS and JavaScript. Komodo 8.0 is Out!
Software
The open-source Arduino environment makes it easy to write code and upload it to the i/o board. It runs on Windows, Mac OS X, and Linux. The environment is written in Java and based on Processing, avr-gcc, and other open source software. THE Arduino SOFTWARE IS PROVIDED TO YOU "AS IS," AND WE MAKE NO EXPRESS OR IMPLIED WARRANTIES WHATSOEVER WITH RESPECT TO ITS FUNCTIONALITY, OPERABILITY, OR USE, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR INFRINGEMENT.