Checklist Design - The best UI and UX practices for production ready design.
2015 Design Tools - Results from survey of 4,000+ designers on their fave tools.
Design Principles - An open source repository of design principles and methods
Visage - Visage is a new platform that enables non-designers to easily create beautiful, on-brand visual content such as data visualization, reports & much more
ManyPixels - Unlimited, on-demand design services for freelancers, startups, and agencies.
FeaturePeek - Collaborate on in-progress website implementations. FeaturePeek allows your team to collect feedback on your front-end during the implementation phase of development.