About A simple Fortran stl x3d viewer , can view 3D model of any stl or x3d file. Get it here : https://github.com/v-h-giang/STL_X3D_Viewer Have 3 open source Fortran library to share here : Using : SDL2 , opengl , glu ASDW button to rotate , or mouse scroll to zoom in/out Compile by MSYS2 (windows):…