Product School - The global leader in product management training
Better Notes - Simple notes app that ties notes together with #hashtags
The Product Manifesto - Product Managers face the biggest challenges of our day, which is why our community needs a common set of product principles.
ClevNote - ClevNote is an amazing mobile application that helps you to write the daily memos on your smartphone.
Intercom on Product Management - The ultimate resource for aspiring product managers
Keep My Notes - Keep My Notes is a fantastic mobile application that allows you to create notes and organizes your notes in the folder efficiently.