Balto - Easy feedback with screenshot / videos for your beta apps
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
buddybuild - Buddybuild ties together continuous integration, continuous delivery and an iterative feedback solution into a single, seamless system. With buddybuild, you can focus on what matters most: creating awesome apps.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
User Interviews + Lookback - Target any audience & record their feedback
LightShot - The fastest way to take a customizable screenshot.