'Dk Ruler', and 'Emavi'

Dk Ruler

DKRuler is a sizable drag and drop horizontal, vertical and translucent ruler for your computer's desktop. DKRuler stays on top of all applications and file system windows.

http://www.dkpcode.com/

Emavi

EmAvi is software to edit the frames of AVI animation files. Text, shapes and lines can be added to the frames of the animation. The thickness of lines can be changed and shapes can be filled with color. The font and color of text can be changed as well as the color of shapes. EmAvi can be used to conveniently add text, such as a company's URL and/or copyright to AVI animation files. Another idea is to use it to add arrows to the frames of animation files to direct the viewer's attention. You can then compress and save the changes using EmAvi

http://www.emurasoft.com/