Land and Agriculture
Local Food: Edible South Shore magazine    
Ultra Low-maintenance Lawns: Pearl's Premium Lawn Seed  
Organic Farm: Holly Hill Farm    
Organic Landscaping Paradigm Organic Landscaping (no website yet)
Sustainable Arborcare & Landscaping Arborcare with Ropes 'n Saddles
Sustainable Landcare; Water Conservation: Greenscapes Lawn & Garden Services, Inc.
  
Energy
Solar Heat and Hot Water: Renewable Energy Systems, LLC     
Interior Forced Hot Air Collectors: Solar Solutions (no website yet)
Geothermal Heating/AC Abell's One Hour Heating/AC    
Small-scale Heliostat System - new solar product: Practical Solar, Inc.  
Renewable Energy: Alternate Energy   
Wind Energy: Atlantic Design Engineers, LLC   
Home Efficiency Equipment: Labrador Services, Inc.
Solar Hot Water; High Efficiency Heating: Weymouth Winnelson Co. 
Hull Wind 1 & 2 Turbine info. Free Tours of Hull Wind
Solar Hot Water Systems: Solar Systems   
Solar Powered Attic Ventilation Fans: Solar Fan Man     
Wind & Solar Renewable Energy: Clean Energy Design
Green Remodeling & Construction: AM Construction  

Transportation
Cross-country Eco-video: Colin McCullough and family      
Commuter Boat Travel: Harbor Express   
Electric Bikes: South Shore EBike  
  
Water and Nature
Water Conservation & Watershed Protection: Aquarion Water    
Environmental Management: Harvard University Extension Environmental Club   
Foundation for a Green Future
MA Sierra Club
North and South Rivers Watershed Association

Other
Socially & Environmentally Responsible Investing: Progressive Asset Management
Children's Eco-activities, Sustainability Stewardship: REI  
Green Solutions for Living; Green Solutions (website TBA) & Whole Body Solutions  
Greening Your Home & Life The Green Roundtable

The Paint Exchange