The Cliff Ecology Research Group
- News and information from a group of scientists in the Botany Department of the University of Guelph, devoted to studying the ecology of cliffs, particularly those of the Niagara Escarpment.
- http://www.uoguelph.ca/botany/research/cerg/

Guelph Environment Network
- A community-based, non-profit, volunteer organization to raise environmental awareness and educate Guelph residents. Includes links to partners, resources and issues.
- http://www.bbc.guelph.org/gen/

Enpar Technologies Inc.
- Specialists in environmental protection and remediation. Includes description of remedial services, technology, environmental news and contact information.
- http://www.enpar-tech.com/

Guelph Boulevard Club
- Offers alternatives to traditional lawns and flower gardens.
- http://www.boulevardclub.guelph.org/