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/

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/

Bassam E. Touma
   Suppliers of software and consulting services for geotechnical and civil engineering applications. Technical brochures on PDF files.
   http://www.tsoftonline.com/

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/

Deep Excavation LLC
   Developers of integrated advanced software programs for deep excavations and geotechnical applications including cost estimation. Extensive technical information and demo's. Links to related sites.
   http://www.deepexcavation.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/

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

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/

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

GWP Software, Inc
   Developers of a slurry consolidation program which determines the rate and magnitude of consolidation of soil slurries such as mine tailings, deltaic deposits, and other soft soils, for application in mine planning, harbour rehabilitation, and tailings pl
   http://www.fsconsol.com/

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

GeoLogismiki
   Geotechnical engineering software for soil liquefaction assessment, vibroreplacement design and CPT data presentation and interpretation. Technical information. On-line demo downloads. Library of freeware.
   http://www.geologismiki.gr/

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/

Geosoftvn.,JSC
   Developers of standard and custom software packages for borehole, drill, and well logging, and data survey compilation applications.
   http://www.geosoftvn.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/

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/

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/

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/

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.tencate.com/smartsite.dws?lang=en&id=4646

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

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

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

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

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

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

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/

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

SoilVision Systems, Ltd
   Developers of one-, two- and three-dimensional CAD software for geotechnical and geo-environmental modeling. Extensive technical information. Animated on-line tutorials and live training.
   http://www.soilvision.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/

TerraWiz, LLC
   Developers of software for geotechnical analysis and design. Also, consultancy services.
   http://www.geotechnicalsoftware.biz/