CThruView Transparent Image Viewer - CThruView is a free transparent image viewer that allows mouse clicks to go through the image.
Mock - Instantly create video mockups from screen recordings
LayerX - An intuitive app to display transparent images on screen.
Previewed - Beautiful mockups & graphics for your next app
Osiva - Osiva" is an acronym that stands for "Overly Simple Image Viewing
Live Mockups - Create engaging Video Mockups for free