Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
vMix - The vMix Software Video Mixer and Switcher is the complete live video production software solution.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
DVSwitch - DVswitch is a digital video mixer intended for interactive live mixing of several incoming DV video...
LightShot - The fastest way to take a customizable screenshot.
mimoLive - Imagine if you had a full blown TV studio at your disposal.