THE X  For most people, this software is slightly pointless. On all Mac's you can now hold hold Ctrl, and then scroll up and down to zoom in on the screen. Much faster than opening an app, and totally integrated to the system!  
(Version 1.3)

GCOGHILL   Needs a global keyboard shortcut to activate/deactivate, as well as hide/show the main zoom window. Also an option to allow the zoom viewer to float above all other widows.

Otherwise, pretty handy.  
(Version 1.1.1)

PHALERON  My sincere gratitude to the developer for making this useful, and very much appreciated tool free. I have a real problem with the older Adobe app palettes which seem to be smaller than norm, and which, on a res-ed up screen are impossible to see. I have been using the Assistive devices display command to magnify the numbers till now which is very, very time-consuming, but this should help immensely.

If it can be further modified and used out of the dock or the menubar it will be perfect.

Thank you.  
(Version 1.1)

VASILIS  Almost perfect. The only thing it needs is (an option for) a horizontal and a vertical pixel line in the Display Window  
(Version 1.0)

OCHYMING  Apple pixie.app does this.

But you would have to instal the developer package.

So thanks.  
(Version 1.0)