The Y Combinator Database - The definitive database of YC companies with all the metrics
Swyg Interview Practice - Practice interviewing in live video chats with a partner
Xobin - Most Comprehesive Pre-Employment skills testing and Psychometric Assessment Platform.
The Interviewer - The Interviewer is an electronic recording solution for custodial interviews and interrogations, online case management, a full text search and more to help manage the records.
Startup School - How to start a startup, by Y Combinator
Strong.app - Strenght training logger.