- Aardton Software
 - Specilizing in groundwater modelling software for flow, contamination, solute transport, polution, and contaminant hydrology. - Absolute Pumping Tests Software
- Offers software for groundwater pumping tests, aquifer models, and slug tests. Made by Scientific Software Group.
- Active Geochemistry Software Inc.
- Develops groundwater chemistry and water geochemistry software for aqueous geochemical data analysis, plotting and modelling.
- AllMax Professional Solutions, Inc.
- Worldwide supplier of operational and maintenance software for municipal and industrial wastewater and water treatment facilities.
- EnviroSim Associates Ltd.
- Interactive simulators for systems treating municipal, petroleum refinery and petrochemical plant wastewaters.
- Groundwater Vistas
- Groundwater model design and analysis environment software package for MODFLOW, MODPATH, MT3D99, MT3DMS, PEST, UCODE, and RT3D. Made by Scientific Software Group.
 NAMMU
- Software package for modelling groundwater flow and contaminant transport through porous rocks.- OPS Systems
- Offers software for water and wastewater data management.
- PreWin
- Offers software for industrial pretreatment programmes.
- Schlumberger Water Services
- Offers dynamic groundwater monitoring and modelling software, training courses, and environmental consulting services.
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