maim - maim (Make IMage) is a spiritual successor to scrot — a simplistic CLI-friendly screenshot tool.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Flameshot - Powerful yet simple to use screenshot software for Linux.
Spectacle App - Move and resize windows with ease.
Nimbus Screenshot - Take screenshots and record video from your screen
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...