Dollar A Day - Automatically donate $1 a day to featured nonprofits.
Startup School - How to start a startup, by Y Combinator
TreeClicks - Plant trees for free by shopping online 🌲🌐
YC World - Explore Y Combinator companies by country
Bourgad - Each new tab becomes a donation ✨🌍
Y Combinator Companies - Interactive list of all 1000+ YC companies