Qi Hardware
Qi Hardware was an organization which produced copyleft hardware and software, in an attempt to apply the Free Software Foundation's GNU GPL concept of copylefting software to the hardware layer by using the CC BY-SA license for schematics, bill of materials and PCB layout data. The project was both a community of popular open hardware websites and a company, founded by Steve Mosher, Jon Phillips, Wolfgang Spraul and Yi Zhang, that made hardware products.