Afloat

Keep windows afloat (heh) on top of all others. Pin windows to the desktop. Move windows from anywhere, not just the title bar. Turn a window into an...

Free Open Source Mac OS X SIMBL

Image Overlay Utility

Image Overlay Utility is a small, easy-to-use program for graphic artists to overlay transparent, click-through images anywhere on screen! Use it as virtual tracing...

Commercial Windows

Osiva

Osiva" is an acronym that stands for "Overly Simple Image Viewing Application." Osiva presents images as virtual tangible objects on the desktop. There...

Free Windows

Overlay2

Overlay2 is like digital tracing paper for your computer. It opens a semi-transparent floating image over video capture or editing software, or 3D modelling software, so...

Commercial Mac OS X Windows

LayerX

An intuitive app to display transparent images on screen.

Free Open Source Mac OS X

Uberlayer

With the Uberlayer app you can put floating images on top of your computer screen. Maybe you want to proof a design to the pixel, watermark a presentation or always have...

Commercial

CThruView Transparent Image Viewer

CThruView is a free transparent image viewer that allows mouse clicks to go through the image. This makes your image see through and click through, so use it as tracing...

Free Open Source Mac OS X Windows Linux Web

Overlay

A frame that allows you to have an image or even PDF displayed semi-transparently in front of everything. It enables you to copy, trace, or compare designs, images, and...

Commercial

GluePrint

Turn any mockup into a floating guide, and visually align pixels with ease. Use GluePrint to implement your interfaces pixel perfect. Simply open a mockup and lock it...

Commercial