Open Census Data - Visualize & download neighborhood demographic Insights
The Y Combinator Database - The definitive database of YC companies with all the metrics
Product Hunt Map - Live map of recent hunters and makers
Startup School - How to start a startup, by Y Combinator
Passport Index 2016 - View the world's passports and see how they rank
Apply to YC (Y Combinator) - Curated collection of resources for founders applying to YC.