Apps similar to Viewshape include F3D, which is free and open source. Other options are Netfabb, Materialise Magics, Free View Expert and Tatlin. You can choose from more than 10 3D Printing Tools like Viewshape for Windows, Mac, Linux and Android.
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
United States
OpenSTL A GUI-based STL (stereolithography) file viewer and editor. No installation needed. Support shaded/wireframe rendering and basic editings (translate/rotate)
