STLView is described as 'A Free STL Viewer for Android and Windows' and is an app. There are more than 10 alternatives to STLView for Windows, Mac, Linux, iPhone and iPad. The best STLView alternative is F3D, which is both free and Open Source. Other great apps like STLView are MiniMagics, Netfabb, Materialise Magics and Free View Expert.
STL Viewer can handle models with over one million facets, the response to pan, zoom, and rotate commands becomes progressively slower with increasing number of facets, even on high-end graphics hardware
OpenSTL A GUI-based STL (stereolithography) file viewer and editor. No installation needed. Support shaded/wireframe rendering and basic editings (translate/rotate)
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