Software Product Management Stack - Resources & tools to help you manage your software product
Cohort - Find the people you need through the people you already know
The Product Management guide - A book on how to create and ship products that people love
A Guide to Marketplaces - Everything you need to know about building a marketplace
Product Management Exercises - A repository of product manager job interview exercises
Cadre - Cadre is a technical staffing agency and recruiting firm.