Startup School - How to start a startup, by Y Combinator
Stealthy: Secret Messenger - Chat anonymously with friends & strangers
The Y Combinator Database - The definitive database of YC companies with all the metrics
Berkanan - Chat with people nearby. Even offline, on an ✈️.
Apply to YC (Y Combinator) - Curated collection of resources for founders applying to YC.
Vuash - Send secret messages safely.