The Y Combinator Database - The definitive database of YC companies with all the metrics
The PM Interview - Practice PM Interview Questions (w/ timer).
Swyg Interview Practice - Practice interviewing in live video chats with a partner
Pramp for Product Managers - Practice product management mock interviews with other PMs
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.
Product Management Exercises - A repository of product manager job interview exercises