CThruView Transparent Image Viewer - CThruView is a free transparent image viewer that allows mouse clicks to go through the image.
Figma Super Tidy - Figma plugin to easily align, rename and reorder your frames
LayerX - An intuitive app to display transparent images on screen.
Easometric Figma Plugin - With Easometric it's really easy to create isometric layers.
Osiva - Osiva" is an acronym that stands for "Overly Simple Image Viewing
Design Lint - A design linting plugin for Figma.