Design Principles - An open source repository of design principles and methods
Accessify - Manage access to all the services your team uses
Facebook Design Resources - A collection of free resources made by designers at Facebook
Adee Accessibility Tool - Adee Accessibility tool is now available in Adobe XD!Adee is the most comprehensive accessibility testing tool for designers and developers.
Facebook - Connect with friends, family and other people you know. Share photos and videos, send messages and get updates.
Colorbox.io - Create accessible color systems 🎨