Compatible: Supports more STL variations than other CAD tools. Fast: The fastest STL viewer available. It needs little RAM and runs quickly even on very old computers. Accessible: Use the arrow keys to go through all files in a folder, like a photo gallery. Easy: No magic keys, just good old buttons and menus. Full color support: Displays triangle colors, material colors, and multi-color prints. Tiny: Not even 100 KiB install size!