Nifty - Manage projects, work, and communications in one place.
Software Product Management Stack - Resources & tools to help you manage your software product
Product Frameworks - Discover product frameworks used to help build products
The Product Management guide - A book on how to create and ship products that people love
Chef - Automation for all of your technology. Overcome the complexity and rapidly ship your infrastructure and apps anywhere with automation.
Product Management Exercises - A repository of product manager job interview exercises