Design Principles - An open source repository of design principles and methods
CodeKeep - Codekeep lets you store and share bits of code and text with other users. Snippets can be organized into folders/labels for instant reuse.
Facebook Design Resources - A collection of free resources made by designers at Facebook
CodeMyUI - Handpicked code snippets you can use in your web projects
Facebook - Connect with friends, family and other people you know. Share photos and videos, send messages and get updates.
Anyfiddle - Build, run and share code in any language from your browser