CThruView Transparent Image Viewer - CThruView is a free transparent image viewer that allows mouse clicks to go through the image.
Anima App - Design, get feedback, convert to code, publish, iterate.
PixelPerfect - Allows developers to put a semi-transparent image overlay over the top of the developed HTML and...
Timeline for Sketch - Create beautiful timeline animations in Sketch
Osiva - Osiva" is an acronym that stands for "Overly Simple Image Viewing
Invision - Prototyping and collaboration for design teams