VideoScribe - Make your own whiteboard video animations with Sparkol VideoScribe – award-winning video scribing app for PC, Mac and iPad. Free trial available.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Easy Sketch Pro - Software Allows You To Create Amazing and NEW Interactive Sketch Videos, SkyRocket Engagement And...
Shutter - Shutter is a feature-rich screenshot program.
Doodly - Create your own doodle video in just 60 seconds
Snipping Tool - Use Snipping Tool to capture a screen shot, or snip, of any object on your screen, and then annotate, save, or share the image