MiniMagics is free .STL viewer software that allows you to view STL files, import and save .STL, .magics and .mgx files, compress .STL files, as well as view parts and detect bad edges and flipped triangles.
Mimics translates CT and MRI scanner data into full 3D models, finite element meshes or rapid prototyping data (STL) within minutes and it allows you to simulate surgical procedures.
Magics rapid prototyping software enables you to import a wide variety of CAD formats and to export STL files ready for rapid prototyping, tooling and manufacturing.