productboard - Beautiful and powerful product management.
Nifty - Manage projects, work, and communications in one place.
ProdPad - ProdPad helps your team gather ideas, surface the best ones and turn them into product specs, and then put it all on a product roadmap.
Foreword - High impact workshops to help you thrive at startups
ProductPlan - Cloud-based product roadmap software solution
The Design Thinking Workshop Kit - A free digital and print kit to help run your own workshop