Fritzing
"Fritzing is an open-source hardware initiative that makes electronics accessible as a creative material for anyone. They offer a software tool, a community website and services in the spirit of Processing and Arduino, fostering a creative ecosystem that allows users to document their prototypes, share them with others, teach electronics in a classroom, and layout and manufacture professional pcbs".
Fonte: http://fritzing.org/home/
"Fritzing is an open-source hardware initiative that makes electronics accessible as a creative material for anyone. They offer a software tool, a community website and services in the spirit of Processing and Arduino, fostering a creative ecosystem that allows users to document their prototypes, share them with others, teach electronics in a classroom, and layout and manufacture professional pcbs".
Fonte: http://fritzing.org/home/