Style guide app 1a
Radish is a large and multifunctional Interface kit. It is an easy and clear way to developpowerful projects with bright design funny and quickly.
A very extensive UI Style Guide
Prestashop style guide
Branding Guidelines More
Ui guide atlas
Dribbble - deskmetrics_ui_style_guide_-_full_view.png by Mateusz Dembek
UI Wireflows on Behance