Marketing Research
Trafix Systems

Street Activities
StiltWalker
BubbleTower

Architects
American Institute of Architects
American Society of Landscape Architects

Bicyling and Walking
Bicycle Transportation Alliance
America Walks
Partnership for a Walkable America
Pedestrian and Bicycle Information Center
The National Center for Bicycling and Walking
Walkable Communities, Inc.

Brownfields
National Brownfield Association

Cities and Towns
Downtown Research and Development Center
International City/County Management Association
International Downtown Association
Municipal Research and Services Center of Washington
National Association of Development Organizations
National League of Cities
U.S. Conference of Mayors

College and University
Society for College and University Planning

Counties
National Association of Counties

Construction
DesignBuild Institute of America
National Association of Home Builders

Commercial Real Estate
Building Owners and Managers Association
National Association of Industrial and Office Properties
Urban Land Institute

Golf
National Golf Course Owners Association

Historic Preservation and Community Development
National Trust for Historic Preservation

Housing
American Senior Housing Association
Apartment Owners Association
National Affordable Housing Management Association
National Apartment Housing Association
National Housing Institute
National Housing & Rehabilitation Association

Planning
American Planning Association
Planners Web

Public Works
American Public Works Association

Rivers
American Rivers

Shopping Centers
International Council of Shopping Centers

Smart Growth
Center for Communities by Design
Center for Livable Communities
Center for Neighborhood Technology
Congress for New Urbanism
Growth Management Leadership Alliance
NewUrbanism.org
Partners for Livable Communities
Project for Public Spaces, Inc
Rocky Mountain Institute
Smart Growth Network
Sustainable Communities Network

Sustainability
Resource Renewal Institute
U.S. Green Building Council

Transportation
Advanced Transit Association
American Bus Association
American Public Transportation Association
Association of American Railroads
Association of Railway Museums
Center for Transportation Excellence
Community Transportation Association of America
Conference of Minority Transportation Officials
Council of University Transportation Centers
Intelligent Transportation Society of America
National Association of Railroad Passengers
National Alliance of Public Transportation Advocates
Streetcar and Heritage Trolley

Tourism
Cultural Heritage Tourism
Cultural and Heritage Tourism Alliance
National Scenic Byways
National Trust for Historic Preservation
Scenic America