Startup Toolkit - Interactive how-to guides to launch your startup
App Launch Checklist - Planning tool for launching your app successfully
JumpStart Toolkit - A pack of tools and goodies to jumpstart your startup
ASO Tools by AppFollow - Tools for App Store Optimization in App Store & Google Play
Electron Toolkit - Toolkit to build and launch Electron apps
ConversionChecklist.org - A 41 point checklist to make your website convert better