Duedot - Dossier collaboration platform
productboard - Beautiful and powerful product management.
Heyday - An automatic journal that makes remembering beautiful & fun
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.
Workgroups DaVinci - Project management and workflow automation software for marketing and creative teams.
ProductPlan - Cloud-based product roadmap software solution