Bitbonkers - Realtime Bitcoin transaction visualizer
Facebook Design - Resources for Designers from the Facebook Design team
Trezor.io - The Hardware Bitcoin Wallet
Bored Box - Bored Box is a surprise collection of ownable in-game assets curated by internet personality and gaming influencer Bored Elon.
Affinity.me - Discover like-minded people (using machine learning)
Explained Visually - An experiment in making hard ideas intuitive.