1)   Screen Calipers 4.0
The Screen Calipers are the unique on-screen measurement tool, that let you measure anything on your computer screen with ultimate accuracy. The Screen Calipers floats above any other application so you can measure anything on your screen.

 2)   Cardio Calipers 3.3
The Cardio Calipers provide a fast and accurate way to measure electrocardiograms on a computer screen with pixel perfect accuracy. The Cardio Calipers are the perfect solution for EKG measurement, to measure Heart Rate, and any part of the complex.

 3)   Pixel Port 1.1
Pixel Port is a magnifier, an eight-way color picker, a ruler, and a protractor. All features reside on a single compact floating palette.

 4)   Pixel Ruler 3.10
Pixel Ruler features horizontal and vertical orientation, dynamic mouse measurement tracking in pixels, cool design.

 5)   WonderWebware.com Screen Ruler 4.1
This tool is designed and made for one single purpose - to help you to measure anything on your screen.

 6)   Reglo 3.5
Reglo is a versatile graphics design tool including an on-screen ruler, a color picker, a magnifier, a mini-screen capture feature, and the ability to resize the windows of other applications.

 7)   Perfect Screen Ruler 2.02
Perfect Screen Ruler is a graphics tool that allows you to accurately measure anything on your screen.

 8)   JFDraw 1.7.0
JFDraw is a pure Java based graphics application and library package.It can help you to complete your mechanical, electronic, architectural graphs drawing applications, or even business process or workflow graphs issues.

 9)   Screen Calipers Mac Edition 3.2
The Screen Calipers are the unique on-screen measurement tool, that let you measure anything on your computer screen with ultimate accuracy. The Screen Calipers floats above any other application so you can measure anything on your screen.

 10)   A Ruler for Windows 1.6
A Ruler for Windows is a free on-screen pixel ruler for your PC. It provides you your choice of a rich woodgrain, stainless steel, clear see-through plastic, or yellow construction ruler. A Ruler for Windows is fun to learn and very easy to use.

 11)   Screen Tracing Paper 1.0
Screen Tracing Paper overlays a transparent digital sheet over your PC desktop so that you may trace diagrams and designs, giving you measurement capability in any situation. Position, area and circumference can be calculated, with accuracy.

 12)   Atrise Golden Section 3.0.1
This program is an unique design tool for artists, designers, programmers, photographers. It allows you design using the golden section proportion visually over your preffered design software.

 13)   GAX reloaded v1.00
GAX is a powerful application for web designers, graphic designers and everyone else who works with graphics. It contains a colorpicker, a screen ruler, and a screen capture tool.

 14)   Abilities Builder Measure It 1.1
Build linear measurement skills, with English and metric rulers. This multimedia program uses the Microsoft Agent Peedy, a parrot character. Printed worksheets and tests can also be generated.

 15)   PDF Measure It 1.06
accurate measurement of the distance and angle between two points on a PDF page

 16)   Mac PDF Measure It 1.01
Mac PDF Measure It is an Acrobat plug-in tool, it enables accurate measurement of the distance and angle between two points on a page. To measure a distance, click anywhere on a PDF page to set a reference point.

 17)   Dividers and Ruler 1.0
Draw with dividers, ruler, protractor, pencil and rubber on the screen as you would do it on a sheet of paper. You see a real ruler on the screen which you can move and rotate. You can then draw along the ruler.