Windows and Mac users have Lightshot - simple tool that allows you to take, caption and edit screenshot in seconds. Unfortunately, on Linux we either stick with command line tools like
scrot. Or use Shutter, which if you ask me is terrible: app starts too slow, editing requires multiple clicks, there multiple windows...
Theres awesome screenshot tool called Deepin Scrot. It have Lightshot-like intuitive interface, that allows select windows or area, and edit screenshots instantly.
Theres bug, when screenshot included selection frame. Until its merged you can use fix in my fork: