Flameshot - Powerful yet simple to use screenshot software for Linux.
maim - maim (Make IMage) is a spiritual successor to scrot — a simplistic CLI-friendly screenshot tool.
HotShots - Hotshots is a screenshot tool with some editing features.
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...