Winner of the "Hack to Give Back" award at HackBeanpot 2019 -- Made by Daniel Rassaby, Sam Xifaras, Michael Wheeler, and Julian Zucker.
We wanted to show how much data Facebook had on people, and the best way of doing that is to visualize it. We extracted as much data as we could from Facebook's data export, and then we created a client-side app that would visualize it. It is important that the app be client side - your full Facebook history is very sensitive data and users shouldn't have to give up their privacy (by uploading their data) in order to visualize it. So, we sent the code to the data, and not the data to the code.