1)   Screen Protractor 4.0
The Screen Protractor allows you to easily and quickly measure any angle on the screen to the nearest Degree or Radian. The Screen Protractor floats above any other application so you can measure any angle on your screen.

 2)   Screen Protractor Mac Edition 3.2
The Screen Protractor allows you to easily and quickly measure any angle on the screen to the nearest Degree or Radian. The Screen Protractor floats above any other application so you can measure any angle on your screen.

 3)   Apellicon nDex 1.1
nDex is a researching tool which will prove indispensable to anyone who needs to review many articles as part of a research project.