Siftery - Share products your company uses and get personalized recommendations
The Product Manifesto - Product Managers face the biggest challenges of our day, which is why our community needs a common set of product principles.
Stackshare - StackShare is a comprehensive website that gives its users the chance to organize and share their technology stack with the rest of the community.
Intercom on Product Management - The ultimate resource for aspiring product managers
SaaSHub - Find and promote software that will help you grow your business or to be more productive.
Product School - The global leader in product management training