Wealthfront - Automated, low cost investment service
SpaceX Falcon 9 Lander - Try (and fail) to land Elon Musk's SpaceX rocket
Qooore - Investing app for hypebeasts
SpaceVR - Explore space with Oculus Rift (pre-launch)
Robinhood - Free stock trading service.
The Size of Space - An interactive visualization of the universe