MeshLab!

OpenSCAD is a software for creating solid 3D CAD objects. It is free software and available for Linux/UNIX, MS Windows and MacOS.

Noesis is a tool for previewing and converting between hundreds of model, image, and animation formats. It utilizes a robust plugin system, with support for native extension modules and Python scripts. The plugin/script API features hundreds of functions and interfaces which assist in developing new formats, tools, and visualization aids.

Multi-platform app and programming framework designed for processing, modeling and rendering of geometric data (bvh, off, obj, ply, stl, vtk).

CloudCompare is a 3D point cloud (and triangular mesh) processing software. It has been originally designed to perform comparison between 3D points clouds only. It relies on a specific octree structure that enables great performances(1) relatively to this particular function. As point clouds were acquired by high data rate 3D laser scanners, CloudCompare was also meant to deal with huge point clouds (typically more than 10 millions points) on standard laptops. Rapidly, comparisonbetween a point cloud and a triangular mesh has been included (see below). Afterwards, many algorithms for point cloud processing have been integrated (registration, resampling, color/normal/scalar fields management, statistics computation, sensor management, interactive or automatic segmentation, etc.) as well as display enhancement tools (customizable color ramps, color & normal vectors handling, calibrated pictures handling, OpenGL advanced shaders and other plugins). »

view3dscene is a VRML / X3D browser, also a viewer for other 3D models. Supported formats are X3D, VRML (1.0 and 2.0 (aka VRML 97)), Collada, 3DS, MD3, Wavefront OBJ scenes. Can do collision detection. Can be used as command-line converter from Collada, 3DS, OBJ, MD3 to VRML/X3D. Has built-in ray-tracer. Rendering uses OpenGL. Free software. For Linux, FreeBSD, Mac OS X and Windows.

A free tool to convert 3D models from one file format to another (i.e. FBX to OBJ or OBJ to STL for 3D printing, DAE to JSON for use with WebGL, ..).

3D Object Converter, a powerful 3d polygon model translation and interactive viewing shareware tool that allows arbitrary 3d model data to be imported from external sources, exported to various industry standard 3d file formats with great accuracy and quality. The program supports 615 file formats.

meshmixer is an experimental 3D modeling tool for making 3D mashups without too much hassle.

HD Model Viewer

The FabliTec 3D Scanner brings you the latest 3D scanning technology directly to your PC. The FabliTec 3D Scanner allows you to create impressive 3D models of persons, pets, and objects.

With KScan3D software and Kinect or Xtion sensors, you can scan real objects and export 3D models in minutes.

What can you do with PUPPICAD?-Create parametric CAD models based on complex rules or mathematical functions.-Process CAD models and extract data.-Create control panels with visual feedback directly on the canvas.-Optimization and iterative design.-Import and export 3D models in several popular file formats. -Add new program features from an almost limitless source of free modules!

quick3d - A Universal 3D File Format Viewer and Converter.quick3D software products provide 3D file format viewing and converting solutions. An expansive set of 3D file format types are supported for viewing and translating.

3D File ConverterSpin 3D converts between STL, 3DS, 3DP, 3MF, OBJ and PLY mesh file formats. No matter which program you use to create your 3D models and 3D designs, you can convert to your desired output format.