Galapix - A Zoomable Image Viewer zoomview.
CThruView Transparent Image Viewer - CThruView is a free transparent image viewer that allows mouse clicks to go through the image.
Flexible Renamer - Batch file renaming that supports exif, id3, and more meta information.
LayerX - An intuitive app to display transparent images on screen.
Foreground Reference Utility - Useful for digital artists who want to use a photo reference with virtually any 3D package (i.e.
Osiva - Osiva" is an acronym that stands for "Overly Simple Image Viewing