matgts

Computational software for geotechnical engineering and mathematics: https://sourceforge.net/projects/matgts/files/

mtfem - finite element analysis, 2D, plane strain state (C, SDL);
mtpile - analysis of a laterally loaded pile (C, SDL);
mtslope - slope stability and displacement analysis using limit equilibrium (C,SDL);
jswall - analysis of a diaphragm wall (JavaScript);
jsmath - mathematics: polynomial equations, linear systems of equations, eigenvalues, matrix multiplication, matrix inversion (JavaScript);
mtwall - obsolete program for analysing a diaphragm wall (C, SDL).

Some Javascript programs require at least Firefox 3 or 4, because of <canvas> and "use strict";. Some general recommendations for compiling the C programs are here: https://sourceforge.net/projects/bars3d/ (SDL 1.2 is required)