Tuemilio - Email forms and referral waiting lists for indie makers
Checklist Design - The best UI and UX practices for production ready design.
Design Principles - An open source repository of design principles and methods
ManyPixels - Unlimited, on-demand design services for freelancers, startups, and agencies.
Facebook Design Resources - A collection of free resources made by designers at Facebook
The modern web design process - An in-depth guide to the processes behind great websites.