Bicycle Coalition of Greater Philadelphia: "promoting bicycling as a healthy, low-cost, and environmentally-friendly form of transportation and recreation."
BlackGold Biofuels: "converting our crudest wastes into our cleanest fuels."
City Parks Association of Philadelphia: "a catalyst for change by advancing visionary thinking about natural resources in the urban community."
Delaware Valley Green Building Council: "a nonprofit membership organization whose mission is to transform the Delaware Valley through sustainable and environmentally responsible planning, design, construction and operation of the region’s buildings, landscapes, cities and communities, mindful of the legacy left for future generations."
Design Advocacy Group of Philadelphia: "advocating on behalf of a quality urban environment."
Greenadelphia: a blog open to postings from anyone relating to sustainability, communities, recycling, etc
Next Great City: Philadelphia: "dedicated to creating a positive future for Philadelphia by advocating for common sense, cost effective policies that enhance environmental quality, strengthen neighborhoods and increase our economic competitiveness"
Pennsylvania Horticultural Society: "the Pennsylvania Horticultural Society motivates people to improve the quality of life and create a sense of community through horticulture."
Philadelphia Environmental Meetup Group: "every environmentalists in philadelphia and the surrounding areas are welcome. Lets help philly green everyway we can."
Philadelphia Going Green: Philadelphia City Government Sustainability Initiatives
Philadelphia Green Map:"engaging communities worldwide to chart a sustainable future"
Philadelphia Orchard Project:"plants orchards in the city of Philadelphia that provide healthy food, green spaces and community food security"
Reading Viaduct Project: "dedicated to the preservation and remediation of The Reading Viaduct as a public open green space; to the creation of a unique elevated linear park to be used by residents of and visitors to the Greater Philadelphia area."
Recycle Alliance of Philadelphia: "a coalition of organizations and individuals working together to promote expanded recycling in the City of Philadelphia in order to improve the environment, economy, and quality of life in our City."
Sustainable Business Network of Greater Philadelphia: "a business organization that brings together local leaders who share a common passion to grow successful businesses that are socially and environmentally responsible."
Sustainable Philadelphia: a forum of local organizations, including Temple University, with the goal of making Philadelphia the greenest, most livable city in America.
White Dog Community Enterprises: goal is "to cultivate a Philadelphia regional economy that is inclusive, just, environmentally healthy, and based on local business ownership."