Pramp for Product Managers - Practice product management mock interviews with other PMs
Speechapp - The simplest way to practice for your next job interview
The PM Interview - Practice PM Interview Questions (w/ timer).
Product Management Exercises - A repository of product manager job interview exercises
Xobin - Most Comprehesive Pre-Employment skills testing and Psychometric Assessment Platform.
AlgoExpert.io - A better way to prep for tech interviews