The 9.1 version of ELPLA is provided as a free download on our website. This free software is a product of GEOTEC Software. The software is included in Photo & Graphics Tools.
From the developer:
ELPLA (elastic plate) is a program for analyzing raft foundations of arbitrary shape with the real subsoil model. The mathematical solution of the raft is based on the finite element method. The program can analyze different types of subsoil models, especially the three-dimensional Continuum model that considers any number of irregular layers.
You may want to check out more software, such as Autodesk Civil 3D Object Enabler, graphite or OpenSceneGraph, which might be related to ELPLA.