A free, Open-Source 3D Viewer designed to make it all easier.
Massive 3D Format support
Free and powerful 3D Viewer for more than 40 file formats, including OBJ, 3DS, BLEND, STL, FBX, DXF, LWO, LWS, MD5, MD3, MD2, NDO, X, IFC and Collada.
Flexible User Interface
Tabbed User Experience so multiple scenes can be open at the same time. 3D views are split in up to four viewports. Different camera modes (orbit, FPS or axis-aligned) are available for each viewport. New files are loaded in the background.