Software Product Management Stack - Resources & tools to help you manage your software product
Nifty - Manage projects, work, and communications in one place.
The Product Management guide - A book on how to create and ship products that people love
GitHub Project Management - No-fluff guide to building a collaborative development team
Product Management Exercises - A repository of product manager job interview exercises
The Product Manifesto - Product Managers face the biggest challenges of our day, which is why our community needs a common set of product principles.