Styleguide design and development, credits.

Links

Styleguides.io: http://styleguides.io
Avanscoperta: http://avanscoperta.it/en
GNV & Partners: http://www.gnvpartners.com/en
Frontend.is: http://frontend.is

Images

Salesforce Styleguide: http://sfdc-styleguide.herokuapp.com/

Icons