Aigence - Redefining payroll.
Software Product Management Stack - Resources & tools to help you manage your software product
TeamSideline - It is a powerful, customizable, mobile enabled website, with integrated online registration, team building, automated scheduling, private team sites, reporting, communication, and much more.
The Product Management guide - A book on how to create and ship products that people love
Moonworkers - HR, shift work, and payroll, all in one place! Streamline people management by operating rotas, payroll, and HR from the same interface.
Product Management Exercises - A repository of product manager job interview exercises