Free Shooter is described as 'Freeware tool for taking fast and simple screenshots of the entire screen, windows and regions' and is a screenshot capture tool in the photos & graphics category. There are more than 100 alternatives to Free Shooter for a variety of platforms, including Windows, Mac, Web-based, Google Chrome and Linux apps. The best Free Shooter alternative is ShareX, which is both free and Open Source. Other great apps like Free Shooter are Greenshot, PicPick, Snipping Tool and FastStone Capture.
You grab Screens or Windows using the standard PrtScn and Alt-PrntScn keys and MGrab will intercept the saved data as it is sent to the clipboard and put it into your chosen folder as a BMP or JPG file leaving the clipboard free for you to take another screenshot.
