UltraStar Deluxe - A free and open source karaoke game inspired by the Singstar™ game, runs on Windows, Linux and macOS.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Yokee - Karaoke to YouTube videos
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
KaraFun - KaraFun is the best online karaoke. Over 35,000 karaoke songs, with studio quality, at home or on the go. Regular updates. Free demo!
LightShot - The fastest way to take a customizable screenshot.