YC Interview Practice App - Get asked YC questions by Sam Altman
YC Mentor - Your AI mentor with Y Combinator knowledge
Pramp for Product Managers - Practice product management mock interviews with other PMs
The Y Combinator Database - The definitive database of YC companies with all the metrics
Apply to YC (Y Combinator) - Curated collection of resources for founders applying to YC.
Xobin - Most Comprehesive Pre-Employment skills testing and Psychometric Assessment Platform.