Overlay - Overlay transforms Figma and Sketch designs into reusable React, Vue.js components
Isometric Game Art Pack - Extensive library of game art for indie devs
LayerX - An intuitive app to display transparent images on screen.
Isometric - Create beautiful, abstract works of art & optical illusions
CThruView Transparent Image Viewer - CThruView is a free transparent image viewer that allows mouse clicks to go through the image.
Sketch Isometric Plugin - Generate isometric views from artboards and rectangles