Kap - Kap is an open-source screen recorder built with web technology.
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...
Zapsnap - Temporary peer to peer screenshot sharing in your browser
Enpose - The simple screenshot bot
Envelop - Immersive virtual reality platform for the Windows desktop, use all your Windows apps in VR.