Live.ly - Live.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Mux Live Streaming API - A simple API to powerful live video streaming
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Look - Live video streaming in your chats and groups
LightShot - The fastest way to take a customizable screenshot.