CUBIT provides an extensive suite of tools for geometry decomposition and mesh generation.

The CUBIT Geometry and Mesh Generation Toolkit
CUBIT is an full-featured software toolkit for robust generation of two- and three-dimensional finite element meshes (grids) and geometry preparation. Its main goal is to reduce the time to generate meshes, particularly large hex meshes of complicated, interlocking assemblies. It is a solid-modeler based preprocessor that meshes volumes and surfaces for finite element analysis. Mesh generation algorithms include quadrilateral and triangular paving, 2D and 3D mapping, hex sweeping and multi-sweeping, tet meshing, and various special purpose primitives. CUBIT contains many algorithms for controlling and automating much of the meshing process, such as automatic scheme selection, interval matching, sweep grouping and sweep verification, and also includes state-of-the-art smoothing algorithms.

List of CUBIT Features...
CUBIT 11.0 Documentation...
CUBIT 11.0 Release Notes...

See Cubit Licensing for information on obtaining the Cubit Geometry and Mesh Generation Toolkit. Licensed users may download the current release from this website.

CUBIT's Cross-platform Graphical User Interface

CUBIT Geometry Power Tool helps to quickly detect and repair problem geometry and prepare for mesh generation