upverter - Upverter makes it easy to design and share electronics on the web.
Circuito.io - Instant code and wiring for your project
Autodesk EAGLE - Autodesk EAGLE is an electronic design automation (EDA) software.
library.io - Learn electronics and easily create circuit boards online
Proteus PCB design - Proteus PCB design combines the schematic capture and ARES PCB layout programs to provide a...
B4R - Development tool for native Arduino programs.