AES, INC. - engineering and environmental consulting organization. Primary specialization: air quality, process control equipment design, industrial hygiene, IAQ ,site investigation and remediation
CIPA - Nonprofit publisher of environmental resource guides, including the newly updated Fifth Edition of the World Directory of Environmental Organizations.
Environmental Marketing Group - Environmental Marketing Group publishes the New England Environmental Directory and other Regional source guides.
EnvirOnLine - An Internet resource directory and locator for air, water, wastewater, and hazardous waste control products, equipment, consultants and services.
Environmental Index to the WWW - The greatest and easiest to use guide to non-commercial environmental resources on the web
The Green Book, Inc. - Environmental information service providing Federal, State, Local & Private contract information as well as an online environmental directory.
GreenLink - A Great Starting Point for a Green Solution!
Green Pages - The Global Directory for Environmental Technology - A single reference source for government departments, utility companies, engineering consultants, development agencies, importers and traders, educational institutes, non-governmental organisations and individuals engaged in environmental activities.
Helios Environmental Resource Network - Publishers of the Willamette Green Directory, online directory of environmental products & services available throughout Western Oregon
The Internet Sleuth: Environment - A list of environmentally related searchable databases which can be searched individually or simultaneously form one page.