- Accent Software
 - Offers 3D scientific data visualisation and animation software for environmental, groundwater, water pollution, contamination modelling, and subsurface visualisation. - Advanced Engineering Software
- Distributes hydrology/hydraulics software.
- American Sigma, Inc
- Manufactures open channel flow and water quality monitors, wastewater samplers and complete sewer system management software.
- Applied Biomathematics
- Offers RAMAS software for ecology, conservation biology, wildlife management, and human health risk analysis.
- Applied Training Resources
- Human centred technology including dynamic simulation, and performance support, for OSHA compliance.
- Bee-Line Software
- Provider of air dispersion modelling software, training, and consulting. Specialises in creating user-intuitive versions of EPA air models and related software.
- C-K Associates, Inc.
- Offering environmental and engineering services regarding air quality, Title V, solid and hazardous waste, remediation, water quality, engineering, GIS, software, and multi-media.
- CadhamHayes Systems Inc
- NewLeaf software allows for data acquisition and site monitoring.
- CIO Systems
- Provides software for printing firms to track ink use and VOC emissions.
- Corbus
- Windows-based MSDS management software that allows companies to comply with various regulatory reporting requirements.
- D-Soft LLC
- Markets software packages for calculating hydraulics and pressure vessel statistics and data.
- Dakota Software
- Management tools for environmental, health and safety compliance professionals in industry and consulting.
- Decision Support System for Evaluation River Basin Strategies
- Useful and handy MS-Windows tool for mathematical modelling of water quality and decision support in a river basin scale.
- EarthSoft
- Markets ground and surface water data management systems with interfaces to Department of Defence's Groundwater Modelling System, ArcView2, borehole systems, etc.
- EasySolve Software
- Designs programmes for generating boring, test pit, and groundwater monitoring reports, and for analizing experimental data and hydraulic conductivity.
- EcoLogic Systems
- Products for asbestos and lead-based paint management, safety and hazardous materials management, and regulatory tracking.
- EMAX Solution Partners
- Enterprise information solutions for chemical information and compliance management.
- EMSoftCorp
- Developers of safety, health, environment, quality, incident, and risk management system software.
- Environmental Management & Compliance Inc.
- Offers a complete, Windows based, menu driven, and easy to operate regulatory compliance system.
- Environmental Visualization System
- Unites state-of-the art 3D analysis, visualisation, and animation tools into a powerful software system developed for geologists, geochemists, mining engineers and modellers.
- Envision Sustainability Tools, Inc.
- Customised modelling solutions for regions worldwide, that cover environmental, economic, and social systems to provide realistic sustainability scenarios.
- Fleet OM&M Manager
- Operations monitoring and maintenance manager application allows restricted Internet access to information about a site's remediation and monitoring progress.
- Geostat Systems International Inc.
- Geostatistical orebody modelling. Consulting and software available. Specialised in mining and environment.
- GreenWare Environmental Systems Inc.
- Environmental management system and waste auditing software.
- Hydrocomp, Inc.
- Develops and distributes continuous hydrologic simulation software and provides consulting, specialising in hydrologic modelling and analysis.
- Hydron Systems
- Offers a software suite for managing large amounts of environmental data in the water resources and wastewater industries.
- Immedia Technologies
- An information technology consulting firm specialising in the development of environmental information solutions.
- Industrial Safety and Environmental Services
- Publisher of Emissions Reporting Software, integratable with MS-Office and accounting programmes to compile information for Title V compliance.
- Intelex Technologies Corporation
- Multinational software development company specialising in environmental, health, safety and quality management systems.
- Interactive Media Communications
- Developer/publisher of multimedia products on health, safety and environmental topics. CD-ROM, videodisc and videotape training programmes to help companies comply with OSHA and other regulations.
- Knorr Associates
- Engineering and software development company specialising in occupational health, safety and environmental information management.
- Ksys
- Making air compliance tracking software for surface coaters. Tracks and reports speciated VOC, HAP, SARA, and PM compounds.
- Lakes Environmental Consultants, Inc
- Free Air Dispersion Modelling Software and Lakes Info and Demos.
 Lexware International Ltd
- Manufactures SHE Health and Safety software systems.- Logical Data Solutions
- Makes EPOCH, an integrated environmental compliance data management software product.
- MacNeill Software
- Complete software package to produce Phase I Environmental Site Assessment narrative reports to ASTM standards using expert text.
- Mannus Corporation
- Assessment tools for environmental health and safety.
- Pinnacle EnviroTech Services, Inc.
- Developers of Compliance Assistant, a software programme designed to implement an EHS compliance management programme using tasks to track regulatory, permits, and company requirements.
- Pizer, Inc.
- Creators of HYDRA and HydraGraphics, industry software for sewer analysis and modelling.
- Quantum Compliance Systems, Inc.
- Environmental health and safety software products.
- Specialty Software Designs
- Developers of medical waste information management, tracking, and reporting software packages.
- SSESCO
- Info 3D Environmental WorkBench, software for 3D visualisation of environmental and scientific data.
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