Gamma Design Software 
Provides description of geostatistics including examples of software useful for quantifying spatial relationships and drawing maps. Relevant to geologists, GISers, ecologists, hydrologists, and remediation engineers.
http://www.geostatistics.com/Environmental, Health and Safety Software Service
Searchable database of commercial software and freeware products for a wide range of environmental applications.
http://www.ehssoftserve.com/
SEVIEW
Integrated package incorporating SESOIL, AT123D and BIOSCREEN -- everything needed to perform contaminant transport and fate modeling. Model results can be used to establish site-specific cleanup levels in soil and groundwater.
http://www.seview.com/
SPINE - Industrial Environmental Information Management
About the development and application of information management and analysis tools for life cycle assessment, environmental management systems, environmental design, and related purposes.
http://www.globalspine.com/
GaBi-Software
Life Cycle Assessment (LCE/ LCA) software system for economic, ecological, and technical decision support in sustainable production and product design.
http://www.gabi-software.com/
Scientific Software Group
Distributor of a wide range of environmental software, including groundwater, surface water, bioremediation, air pollution, and geotechnical applications.
http://www.scisoftware.com/
Environmental Software House
Offers up-to-date, comprehensive selections of high quality software applications currently available, organised by categories: Air Pollution, Environmental Management Systems, Risk Assessment, Groundwater Resources, Waste Management, Wastewater Treatment.
http://www.environmental-center.com/software.htm
GeoAnalysis, Inc.
Offers specialized software and consulting services for environmental database management, project analysis, and groundwater modeling.
http://www.geoanalysis.com/
Regulatory Software Services, Inc.
Develops and markets software for PCB record-keeping, waste tracking and EPA regulatory compliance.
http://www.pcbcompliance.com/
Risk Identification of Soil Contamination - RISC
A framework and model to predict potential risks, using expertise on presence and behaviour of contaminants in soil. Downloadable demo. Developed by the Van Hall Institute in Groningen, The Netherlands.
http://www.risc-site.nl/
