productboard - Beautiful and powerful product management.
Open Startups - Open startups with their metrics, interviews, and stories
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.
Mixergy Startup Stories - Learn from 1000+ interviews including the Product Hunt story
ProductPlan - Cloud-based product roadmap software solution
Starter Story - Learn how others are building successful e-commerce businesses.