This is a JavaScript/HTML5 app that reads VISION engine (Wing Commander: Prophecy/Secret Ops) MAT texture files, and displays them on HTML5 canvases.
Just select some MAT files using the file selector, and they will be loaded automatically, and displayed to you as they are being loaded. Once the load is complete, you can hover over each image rendered from the MAT file, and you can see which MAT corresponds to the image you are hovering over.