Open Source STL Viewers
Linux  Mac  Windows

GLC_Player is an Open Source software used to view 3D models (COLLADA 3DXML OBJ 3DS STL OFF COFF Format) and to navigate easily in these models. English and French interface.

Linux  Mac  Windows

Gmsh is a 3D finite element grid generator with a build-in CAD engine and post-processor.

Linux  Mac  Windows

Besides being a viewer, this is also a very powerful mesh editor. Meshlab supports a very wide range of 3D file formats.

Linux  Windows

Viewstl is an open source way to view Stereo Lithography Files as shaded on-screen images. Ascii STL files and dynamic rotation, scaling, and panning are currently supported.

Free STL Viewers
Simple but lightweight and fast viewer.
Unfortunately only available with German interface


MiniMagics can also analyze and section parts. English, German and Japanese versions.


Linux  Mac  Windows
NetFabb Studio
Powerful viewer that can also repair, scale, cut, edit meshes and much more. English and German interface.


VisCAM View
VisCAM View is a very easy-to-use and efficient tool to view, check, measure and communicate STL files. Visualisation of STL, 3DS, VRML, DXF, PLY, ZPR and VFX files.