GiD!

Wings 3D is a subdivision modeler inspired by Nendo and Mirai from Izware.

Gmsh is a 3D finite element grid generator with a build-in CAD engine and post-processor. Its design goal is to provide a fast, light and user-friendly meshing tool with parametric input and advanced visualization capabilities. Gmsh is built around four modules: geometry, mesh, solver and post-processing. The specification of any input to these modules is done either interactively using the graphical user interface or in ASCII text files using Gmsh's own scripting language.

SALOME can be used as standalone application for generation of CAD models, their preparation for numerical calculations and post-processing of the calculation results. SALOME can also be used as a platform for integration of the external third-party numerical codes to produce a new application for the full life-cycle management of CAD models.

ParaView is an open-source, multi-platform application designed to visualize data sets of size varying from small to very large.

3D Model Maker lets you create virtual 3D models in your computer. You can create anything your imagination can think of. (Not limited to simple cubes or blocks like some apps!) It uses meshes of polygons just like they used in Toy Story.It uses the 3DS file format which is compatible with lots of professional software like Autodesk 3D Studio, Maya, AutoCAD and Blender. This means you can create your models on the move on your tablet or PC and import them later into the 3D package of your choice.Use tools like "extrude", "subdivide", "smooth", "pull" and many more to create your 3D objects. Move the individual vertices around or move select multiple vertices with the box select tool.Paint the faces different colors. Rotate the 3D shapes at any angle or choose from a list of views. »

VisIt is an Open Source, interactive, scalable, visualization, animation and analysis tool. From Unix, Windows or Mac workstations, users can interactively visualize and analyze data ranging in scale from small (<10^1 core) desktop-sized projects to large (>10^5 core) leadership-class computing facility simulation campaigns.

PhotoAnim is a free Windows program to edit and animate photos.Resulting animations and videos can be published on http://3dthis.com

ANSA is an advanced multidisciplinary CAE pre-processing tool that provides all the necessary functionality for full-model build up, from CAD data to ready-to-run solver input file, in a single integrated environment.ANSA is the users’ preference due to its wide range of features and tools that meet their needs. The list of productive and versatile features is long and the alternative tasks and processes to be completed using them are countless.

enGrid is an open-source mesh generation software with CFD applications in mind. enGrid uses an in-house development for surface meshing and prismatic boundary layers; a module for hex far-fields will be added in the next release. Tetrahedral parts of the mesh are created by calling the Netgen library. Internally, enGrid uses the VTK data structures as well as the *.vtu ?le format.

NETGEN is an automatic 3d tetrahedral mesh generator. It accepts input from constructive solid geometry (CSG) or boundary representation (BRep) from STL file format. The connection to a geometry kernel allows the handling of IGES and STEP files. NETGEN contains modules for mesh optimization and hierarchical mesh refinement. Netgen is open source based on the LGPL license. It is available for Unix/Linux and Windows.

OpenDX gives you new control over your data...and new insights into their meaning. Yet OpenDX is easy to use because it lets you visualize data in ways you've never dreamed of--without getting bogged down in the technology.

TetGen is a program to generate tetrahedral meshes of any 3D polyhedral domains. TetGen generates exact constrained Delaunay tetrahedralizations, boundary conforming Delaunay meshes, and Voronoi partitions. The following pictures respectively illustrate a 3D polyhedral domain (left), a boundary conforming Delaunay tetrahedral mesh (middle), and its dual - a Voronoi partition (right).