Screenshot Crop For Mac

Screenshot Crop detects when an image is captured in the clipboard and will show the clipboard image content for cropping.
Using the guided lines, easily select the part(s) of the image you want to keep. Once the image is cropped, Screenshot Crop is minimized so that you can continue on the software you took the screenshot from.
Fremium: 30 crops per month free, then a watermark is applied to the image.