Audubon Society (Amos W. Butler Chapter, Central Indiana)

B&O Trail Association

Blatchley Nature Study Club (Noblesville)

Carmel Green Initiative

Central Indiana Wilderness Club

Eagle Creek Park Foundation

FreeCycle Indy Network

Friends of the White River

Green.Indy

Hoosier Environmental Council

Hoosier Heartland RC&D Council

Hoosier Hikers Council

Improving Kids' Environment (IKE)

Indiana Living Green Magazine

Indiana Native Plant and Wildflower Society

Indiana Recycling Coalition

Indy FreeCycle Network

Indy GreenPrint

Indiana Master Naturalist

Invasive Plant Pest List: Indiana's "Most Unwanted"

Keep Indianapolis Beautiful

Keep lawns safe... (Indiana Living Green)

Plant a Million Project

Recycling Information:

• Curbside recycling in Indianapolis
• Keep Indianapolis Beautiful Recycling Information
• Where can I recycle phone books?
• Where can I recycle plastic shopping bags?
• Tox-Drops: household hazardous waste

SustainIndy.org (Indianapolis sustainability initiative)

Urban Indy (blog): Dedicated to a sustainable Indianapolis