ChatWhale - Gamify your customer communication and loyalty rewards
productboard - Beautiful and powerful product management.
Open Loyalty for Startups - Open source stack for building customer focused products
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.
Reviews for iOS - Keep track of your App Store reviews
ProductPlan - Cloud-based product roadmap software solution