App Launch Checklist - Planning tool for launching your app successfully
Ruby Toolbox - Explore and compare open source Ruby libraries
Rage Grade by FullStory - Benchmark your customer frustration
AlternativeTo - AlternativeTo lets you find apps and software for Windows, Mac, Linux, iPhone, iPad, Android, Android Tablets, Web Apps, Online, Windows Tablets and more by recommending alternatives to apps you already know.
ASO Tools by AppFollow - Tools for App Store Optimization in App Store & Google Play
UserBit - A full-stack qualitative research platform for UX & product teams.