1. Fritzing
http://wp.flash-jet.com/2015/06/20/fritzing-an-open-source-hardware-initiative/
2. Wiring
http://wp.flash-jet.com/2015/06/19/wiring-an-open-source-programming-framework-for-microcontrollers/
3. Wyliodrin
http://wp.flash-jet.com/2015/06/27/wyliodrin-great-ide-for-raspberry-arduino-and-more-sbc/