ANSA is described as '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' and is an app. There are more than 10 alternatives to ANSA for a variety of platforms, including Windows, Linux, Mac, Android and Android Tablet apps. The best ANSA alternative is Blender, which is both free and Open Source. Other great apps like ANSA are MagicaCSG, picoCAD, Gmsh and SALOME.
Pointwise is the choice for CFD Meshing. It's easy to use, highly automated, provides direct interfaces to popular CFD analysis software, and comes with professional tech support.
NETGEN is an automatic 3d tetrahedral mesh generator. It accepts input from constructive solid geometry (CSG) or boundary representation (BRep) from STL file format.
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