Checklist Design - The best UI and UX practices for production ready design.
Design Principles - An open source repository of design principles and methods
Business-Driven Digital Product Design - A guide on how to create influential user experience
UXmeter - Like Tinder, but for finding the hottest web design in town
UX Design Weekly - The best user experience links each week to your inbox
Atlassian Design - Design, develop, and deliver