Z88 is a fast, powerful, and compact finite elements analysis program. Z88 features 20 finite element types; it covers plane stress, plate bending, axial symmetric structures, and spacial structures up to 20-node Serendipity hexahedrons. It comes with a user-friendly interface (the Z88 Commander), and has a powerful mesh generator. It features a DXF coverter and two plot programs. The FEA solver is included, featuring an in-situ Cholesky solver along with the Jennings storage method. COSMOS and NASTRAN files from Pro/ENGINEER can be imported. Z88 is a project of the University of Bayreuth, Germany.
pyFormex is a tool for generating, manipulating, and transforming large geometrical models of 3D structures by sequences of mathematical transformations. Thanks to a powerful (Python based) scripting language, it is very well suited for the automated design of spatial frame structures. It provides a wide range of operations on surface meshes, like STL type triangulated surfaces. There are provisions to import medical scan images. pyFormex can also be used as a pre- and post-processor for Finite Element analysis programs. Finally, it might be used just for creating some nice graphics.
FEDES is a Finite Element Data Exchange System for mapping finite element analysis data between different FE solvers and meshes with different element types and densities. Six commercial FE solvers are supported (ABAQUS, ANSYS, DEFORM, MARC, MORFEO, and VULCAN). The FEA data output can be visualized with ParaView.