InScribe - The go-to software tool for data scientists and developers to create handwritten digits and drawings
WT:Social - A news focused social network from the founder of Wikipedia
Build It With Me - Connecting you with like-minded designers & developers
Facebook Design - Resources for Designers from the Facebook Design team
Affinity.me - Discover like-minded people (using machine learning)
Explained Visually - An experiment in making hard ideas intuitive.