PicPick - PicPick screen capture software enable you to grab an image on your computer screen, save, print, add effects, and share.
Meazure - What are the dimensions of that image? How big is this window?
Shottr - Shottr is a free macOS screenshot app with scrolling screenshots, OCR, annotation and measurement instruments.
JR Screen Ruler - JR Screen Ruler, also known as JRuler - Free virtual ruler for your computer screen.
Measure Schmeasure - Measure Schmeasure is a simple screen ruler for measuring the width or height between pixels in any...
PixelSnap - Measure every pixel on your screen with ease ✨