Perfect Eye is a useful tool that displays an image in front of other windows. It is indispensable for developers who work on pixel perfect UI. It has special features which helps to find exact differences between mockups and actual UI. Mobile developers will appreciate the possibility to locate the image over the simulator / emulator with a hotkey.
It is also really helpful for artists and designers as it allows to keep the reference image always visible during the work in the favourite graphics editor.
