productboard - Beautiful and powerful product management.
Dovetail - Mobile Cloud-Based Dental Software
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.
Loomio - Loomio helps groups of people make decisions together, online.
ProductPlan - Cloud-based product roadmap software solution
DemocracyOS - DemocracyOS is an open source application for online decision making.