Collabshot - Free web and desktop application that enables quick screen grabs, easy URL-based sharing, and live, multi-person drawing and sketching.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Flameshot - Powerful yet simple to use screenshot software for Linux.
ScreenToGif - This tool allows you to record a selected area of your screen and save as a animated gif.
Nimbus Screenshot - Take screenshots and record video from your screen
recordit.co - Make a short video capture of your desktop as a gif.