Canny - Canny helps you collect and organize feature requests to better understand customer needs and prioritize your roadmap.
Mightytext - Send & Receive SMS Text Messages from your computer. Sync'd with your Android #
ProdCamp - An all-in-one tool for User feedback managment, public roadmap, feature voting board, changelog.
Zeplin - Collaboration app for UI designers & frontend developers
productboard - Beautiful and powerful product management.
Abstract - A secure, version-controlled hub for your design files