Easy to use and customizable

Xstl is a free and open-source STL viewer for Linux and Windows, build with modern tools, Electron and React. With Xstl you can open an STL file and navigate trough a directory to see all the STL files on it, buy using buttons or with a shortcut (`alt+z` and `alt+x`). The default view is isometric, so you can see all the details of your model.