PicPick, Shottr, Screen Calipers, Pixel Ruler, Free Ruler, JR Screen Ruler, JR Screen Ruler Pro, On-Screen Ruler, Bluegrams Screen Ruler, Meazure, A Ruler for Windows, Pixel Ruler for Android, Screen Ruler Professional, Pixus, Pixel Ruler 2.0.2, PixelWindow, Cubic Ruler, ReadingRuler, MezerTools, orangePixelMeter, PixelRuler, Window Ruler, Measure Schmeasure are some alternatives to PMeter.