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Infinite Slope v3.0
Software for slope stability analysis based on the limit equilibrium analysis of the well known 'infinite slope' model. The visual intuitive approach enriches the analysis experience both for educational and for professional purposes.

US Radar Inc
US Radar is a technological leader and manufacturer in the design and innovation of surface and ground penetrating radar (GPR) systems and software. If you need to see what is on the other side of a surface, their high-profile GPR, Utility Mapping, and GIS software technologies will accurately help you define what can't be seen with the bare eye.

A powerful and easy to use ultimate limit state geotechnical analysis software program which is FREE to universities for teaching and research use. The software effectively bridges the gap between hand-type analysis methods and significantly more complex tools (e.g. based on finite elements). The software is a flexible tool for use in teaching (see and provides rigorous plasticity solutions for use in research.

Cone Penetration Test (CPT) 
Video of the CPT, courtesy of Mehmet Tumay, LSU/LTRC

CPT-Based Probabilistic Soil Classification Zhang/Tumay

Delft University
There is a selection of software for beam on elastic foundations, sheet piles, axial piles, & lateral piles available for free from Delft University (and slope stability):

Federal Highway Administration
The Federal Highway Administration (FHWA) has free downloadable software including SPILE (vertical pile capacity), EMBANK (settlement of embankments), CBEAR (bearing capacity of shallow foundations), COM624 (lateral pile spring model), and others located at:

The Delft Geotechnical Lab has written an extensive FEM program called Plaxis which is quite powerful but costs around US $4000. An intro version is about $750 US.

Geotechnical & Geoenvironmental Software Directory
An extensive listing of geotech software is at:

Oasys Ltd
The software house of Arup ( international consulting engineers, now offers all of its geotechnical and structural engineering software FREE to universities. The Oasys GEO suite provides programs for slope, flexible wall, vertical displacement, retaining wall stability, tunnel settlement, pile and soil finite element analysis.

Please select the "Academic Zone" tab for information on our UNIPAC scheme.

GAEA Technologies
Develops and distributes software for environmental and civil engineering. Current titles include: Pocket ESA, Pocket WinLoG, WinLoG, WinFence, WinSieve, POLLUTE, and MIGRATE.



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