GetDP is a general finite element solver using mixed elements to discretize de Rham-type complexes in one, two and three dimensions. The main feature of GetDP is the closeness between the input data defining discrete problems (written by the user in ASCII data files) and the symbolic mathematical expressions of these problems.

NWChem is a computational chemistry package that is designed to run on high-performance parallel supercomputers as well as conventional workstation clusters. It aims to be scalable both in its ability to treat large problems efficiently, and in its usage of available parallel computing resources. NWChem has been developed by the Molecular Sciences Software group of the Environmental Molecular Sciences Laboratory (EMSL) at the Pacific Northwest National Laboratory (PNNL). Most of the implementation has been funded by the EMSL Construction Project.

V_Sim visualizes atomic structures such as crystals, grain boundaries and so on (either in .d3 format as defined by F. Lançon, or in plain text format as described in the sample page). The rendering is done in pseudo-3D with colored sphere to represent the atoms. The user can interact through many functions to choose the view, the size of the atoms, their color, the background color, the type of fog... Much of it is detailled in the user guide. Moreover V_Sim allows to export the view as image in GIF, PS or more formats. It uses GTK2 (lib and dev files version 2.4 or greater) and OpenGl

FreeFem is an implementation of a language dedicated to the finite element method. It enables you to solve Partial Differential Equations (PDE) easily. Problems involving PDE from several branches of physics such as fluid-structure interactions require interpolations of data on several meshes and their manipulation within one program. FreeFem includes a fast quadtree-based interpolation algorithm and a language for the manipulation of data on multiple meshes

Free software for static and dynamic structural analysis of 2D and 3D frames and trusses with elastic and geometric stiffness. Computes the static deflections, reactions, internal element forces, natural frequencies, mode shapes and modal participation factors of two- and three- dimensional elastic structures using direct stiffness and mass assembly. Graphical output and mode shape animation via Gnuplot version 4.0.