Snagit - Screen Capture Software for Windows and Mac
ScreenTray - A better way to capture, annotate and share screenshots
Camtasia - Camtasia 2018 makes it easy to record your screen and create polished, professional-looking videos.
Annotate by Convergely - Easily annotate images you get on Slack - just like Skitch
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Weava - Workspace to highlight, organize & collaborate on your research articles.