Envelop - Immersive virtual reality platform for the Windows desktop, use all your Windows apps in VR.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Salad Room - Share text, links or files quickly between devices
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
PageShare - Comment on any website or web app. See bugs in the right context with our interactive recordings. Use it with your whole team directly from a browser.
LightShot - The fastest way to take a customizable screenshot.