Scrum for Trello - Adds functionality to Trello boards for your Scrum projects.
Software Product Management Stack - Resources & tools to help you manage your software product
Ora - Welcome to your team’s command center. A place to track projects. Tasks. Time. Commits. Status Reports. Your entire product or business! It's the fastest-growing productivity suite your team needs right now!
The Product Management guide - A book on how to create and ship products that people love
UpDiagram - Free agile project management tool for scrum team
Product Management Exercises - A repository of product manager job interview exercises