• 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 Links in Southeast Asia - Environmental consulting in U.S. and Southeast asia
  • 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
  • Federal and State Environmental Regulatory Links - Links to Federal, State, and Misc. Environmental Web sites. Useful when conducting environmental audits.
  • 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
  • Hong Kong EcoNet - Environmental Directory - Hong Kong EcoNet is the one stop directory for environmental resources in Hong Kong
  • The Internet Sleuth: Environment - A list of environmentally related searchable databases which can be searched individually or simultaneously form one page.
  • La Planete A Besoin De Nous - French , European Environmental Directory
  • Macrocosm USA Home Page - A nonprofit clearinghouse for progressives featuring a database/directory of 7,000 organizations, periodicals, etc.
  • Merlin's Jump Site - A page with links to all non-profit/service groups. Easy to use. A-Z Simple and easy to use.
  • Mexico's Index - Environment and natural resources.
  • NatureNet - Directory of nature reserves, country parks, designations and organisations. UK based.
  • OneEarth Gallery - an inspiring list of progressive world wide web sites featuring environment, health and social action categories
  • State Environmental Links - This copyrighted page is the only site on the internet with links to all fifty State Environmental Agencies.
  • The Sustainable Forests Directory - Directory to WWW information covering sustainable forestry issues and organizations.