GeotechniCAL  
   Computer-aided learning for geotechnical engineering. Has a range of CAL packages available for downloading and also provides links to others.
   http://geocal.uwe.ac.uk/

GEO-SLOPE International Ltd.  
   CAD software for geotechnical and geo-environmental modelling
   http://www.geo-slope.com

Program for Incremental Stress Analysis  
   Program developed for analyzing the deformation of geotechnical structures . Includes program description and a downloadable demonstration.
   http://www.pisa.ab.ca/

Data Surge Corp  
   USA. Developers of geotechnical software applications for professional engineers and geotechnical engineering students. On-line, limited versions of programs.
   http://www.data-surge.com/

Slope Stability Analysis Software  
   Software program for the general solution of slope stability problems, featuring the analysis of reinforced soil slopes with geosynthetics, nailing and tiebacks. Developed by the School of Civil Engineering in the Purdue University, USA.
   http://www.ecn.purdue.edu/STABL/

ADAMA Engineering, Inc  
   USA. Developers of software for geotechnical engineering. Programs for the design of grid reinforced slopes, block and earth walls, and geotubing. Product brochures on PDF files. Requires Acrobat Reader.
   http://www.geocops.com/

Geosolve  
   UK. Developers and distributors of geotechnical analysis and design software for retaining and gravity walls, slope stability and reinforced soils. Password protected download area.
   http://www.geosolve.co.uk/

Geocomp Corp  
   USA. Developers of software and hardware data acquisition systems for acquiring, manipulating and reporting of test data in soils laboratories, and automated systems for the control of all phases of geotechnical testing. Links to related sites.
   http://www.geocomp.com/

Erosion Control Materials Design Software  
   Computer-assisted selection of materials for slope erosion protection and channel scour resistance, for engineers, designers and contractors in the erosion and sediment control industry.
   http://www.nagreen.com/software/software.html

Geotechnical and Geoenvironmental Software Directory  
   A directory of programs, software publishers and suppliers in the fields of geotechnical, geoenvironmental and environmental engineering; hydrogeology, geology, geoscience, data analysis and data visualisation.
   http://www.ggsd.com/

Geotechnical Computer Applications  
   USA. Software for subsurface investigation, facilitating generation of reports and analysis of subsurface data. Sample reports. Downloadable demo. Pricing information.
   http://www.gcagint.com/

TAGAsoft, Ltd  
   USA. Developers of software programs for slope stability, consolidation, finite elements, seismatic analysis, pile groups and foundation design. Articles and bookstore. On-line calculators.
   http://www.tagasoft.com/

Scientific Software Group  
   Supply a range of geotechnical software. Product overviews, detailed descriptions, and FAQs .
   http://www.scisoftware.com/products/cat_geotechnical/cat_geotechnical.html

Geosurface Technologies  
   Software for Land Surveyors, Engineers, Seismic and GIS Professionals.
   http://www.geosurfacetech.com

Geotextile and Geosynthetics Calculation Programs  
   Computer programs for the design of soil filtration and slope reinforcement, including selection of appropriate geotextiles and geosynthetics. In Zip format. Provided by T.C. Mirafi.
   http://www.tcmirafi.com/software/software_index.html

LISCAD  
   Land survey and civil engineering program.
   http://www.liscad.com/

4D SOLUTIONS  
   Integrated terrain modeling and civil works software package used in surveying, land subdivisions, drainage, earth moving, landscape design, mapping and mining applications.
   http://www.4d.com.au/

Ardy Environmental Software  
   Slope stability analysis, geotechnical, and geoenvironmental (geo-environmental) models and modeling software including GALENA.
   http://www.slope-analysis.com/

Oasys Software  
   32-bit Windows programs for flexible retaining wall, soil movement and geotechnical finite element analysis.
   http://www.oasys-software.com

Delft GeoSystems BV  
   The Netherlands. Developers of software for geotechnical applications. Product catalog with extensive technical information. Also, on-line databank for geotechnical information related to The Netherlands. English and Dutch.
   http://www.delftgeosystems.nl/

Slope Stability Software - Edwin Bane Kroeger  
   Program to calculate the factor of safety for plane failures in rock and soil slopes where defined discontinuity planes exist. Free downloadable version in zip format .
   http://www.engr.siu.edu/mining/kroeger/index.html

PanTechnica Corp  
   Slope stability analysis using limit equilibrium keyblock analysis. Downloadable free demos.
   http://www.pantechnica.com/software/kbslope/

O. Hungr Geotechnical Research, Inc  
   Windows-based microcomputer program for geotechnical slope stability analysis in two or three dimensions.
   http://www.clara-w.com/

Environmental Modeling Research Laboratory  
   Environmental modeling software specializing in ground water, watershed, and surface water modeling.
   http://emrl.byu.edu/

StreaMMetrics  
   Technical software for watershed managers and engineers specializing in applied stream geomorphology.
   http://www.streammetrics.com

Key Systems Geotechnical  
   Borehole logging and management software.
   http://www.keygeotech.co.uk/

Levelworks  
   Surveying software for the HP48 calculator.
   http://www.levelworks.net/

Geo & Soft International  
   Geotechnical software for rock mechanics, soil mechanics, hydrogeology, geophysics and geology. English, Italian and Spanish.
   http://www.geoandsoft.com/

Geo-Tec series  
   Programs dedicated to geotechnical field analysis, penetrometric tests and slope verification. For Windows and Macintosh
   http://www.interstudio.net/GeoTecE.html

Nilex Software  
   Design software for the specification of prefabricated vertical drains, featuring automatic calculation of spacing requirements for wick drain installation.
   http://www.nilex.com/ground/software.htm