Flow - Stop managing projects from your inbox.
The Product Manifesto - Product Managers face the biggest challenges of our day, which is why our community needs a common set of product principles.
SlimPlanner - Team scheduling, resource planning, task management
Intercom on Product Management - The ultimate resource for aspiring product managers
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.
Product School - The global leader in product management training