Design Principles - An open source repository of design principles and methods
Checklist Design - The best UI and UX practices for production ready design.
Facebook Design Resources - A collection of free resources made by designers at Facebook
Business-Driven Digital Product Design - A guide on how to create influential user experience
Facebook - Connect with friends, family and other people you know. Share photos and videos, send messages and get updates.
moyo - Make your UX qualitative testing easier with moyo