Mac’s screenshot abilities are pretty solid, but they could always be better. Third-party screenshot applications offer a lot of extra features.
Check out these Mac Menu Bar Screen Capturing Apps:
VisionShot
Automatically archive, access and search your screenshots. Search for your screenshots by the texts in them or keywords.
Xnip
Gifable
With this menu bar app you can record your screen as a GIF.
ScreenshotMenu
Take screenshots right from your menu bar. Just click the camera menu bar icon and choose one of the options.