The following organizations and individuals have signed on to the Interim Report.

1260 Housing Development Corporation
AARP
Alliance for Advancing Nonprofit Healthcare
Alliance for Children and Families
Alliance for Nonprofit Management
Alliance of Nonprofits for Insurance, Risk Retention Group
Altria Group, Inc.
American Cancer Society
American Heart Association
American Lung Association
American Red Cross
American Service to India
American Society of Association Executives 
America's Fund for Communities
Amity Institute
Anti-Defamation League
Arms Wide Open
Arts Leadership League of Georgia
Asian American Federation of New York
ASPIRA Association
Associated Grant Makers
Association for Healthcare Philanthropy
Dexter F. and Dorothy H. Baker Foundation
W. Todd Bassett, National Commander, The Salvation Army
Dr. Richard C. Becker, President, Arthur J. Schmitt Foundation
Claude Worthington Benedum Foundation
Susan Berresford, President and CEO, Ford Foundation
The Birmingham Foundation
Bob Goodwin, President & CEO, Points of Light Foundation
Willard Boyd, Director, Waterman Iowa Nonprofit Resource Center
BoardSource
Nick Bollman, President, California Center for Regional Leadership
Brain Trauma Foundation
Pam Buckmaster, Organizational Development Consultant, Pam Buckmaster & Associates
Milinda Butterworth, Executive Director, Knowledge Exchange Center or Rhode Island
CAF America
The California Wellness Foundation
Laura Callanan, Executive Director, The Prospect Hill Foundation
The Campagna Center
James E. Canales, President, The James Irvine Foundation
Carnegie Corporation of New York
CBM Credit Education Foundation
Center for Nonprofit Advancement
Center for Non-Profit Corporations
Central Dallas Ministries
The Chicago Community Trust
Children's Medical Research Institute
Children’s Research Triangle
The Cleveland Foundation
Close Up Foundation
Collaborative Opportunities for Raising Empowerment
Colorado Association of Nonprofit Organizations
The Columbus Foundation
Community Foundation for Monterey County
Community Foundation of Greene County, Pennsylvania
The Community Foundation for Greater Atlanta, Inc.
The Community Foundation of Westmoreland County
The Community Foundation Serving Richmond and Central Virginia
Community Human Services Corporation
Community Involvement Foundation
Community Shares of Colorado
CompuMentor
Connecticut Council for Philanthropy
Connelly Foundation
The Conservation Fund
The Constantin Foundation
Council of Michigan Foundations
Council on Foundations
Demos: A Network for Ideas and Action
Des Moines Neighbors
William M. Dingfelder
The Donors Forum of Chicago
Dortch Foundation
Easter Seals Goodwill Industries, New Haven, CT
Easter Seals Northwestern Ohio
Marcie Eberhart, Director, American Eagle Outfitters Foundation
Edna McConnell Clark Foundation
Linda Perryman Evans, President and CEO, The Meadows Foundation
FEGS Health and Human Services System
Jeannette Ferro, President, Aid for Animals, Inc.
Filipino American Human Services, Inc.
The Forbes Funds
Forum of Regional Associations of Grantmakers
The Foundation Center
The Foundation for the Mid South
Franklin McKinley Education Foundation
Girl Scouts of the USA
Girls Incorporated
Kenneth Gladish, CEO, YMCA of the USA
Goodwill Industries International, Inc.
Goodwill Industries of Central Texas
Goodwill Industries of Colorado Springs 
Goodwill Industries of East Central Ohio, Inc.
Goodwill Industries of El Paso
Goodwill Industries of Kanawha Valley 
Goodwill Industries of Middle Georgia and the CSRA
Goodwill Industries of Middle Tennessee, Inc.
Goodwill Industries of North Central Wisconsin Inc.
Goodwill Industries of Northwest NC, Inc.
Goodwill Industries of San Joaquin Valley, Inc.
Goodwill Industries of the Columbia Willamette
Goodwill Industries of the Valleys
Goodwill Industries of West Michigan, Inc.
Goodwill of Grand Rapids
Goodwill of Greater Washington
Goodwill Southern California 
Goodwill-Suncoast/Tampa, St. Petersburg, Flordia
Grantmakers for Effective Organizations
Grantville Community Outreach, Inc.
The William Caspar Graustein Memorial Fund
The Greater Cincinnati Foundation
Anne E. Green, Vice Chairman, The Alliance for Nonprofit Governance
Florence Green, Executive Director, California Association of Nonprofits
Robert Greenstein, Executive Director, Center on Budget and Policy Priorities
Paul S. Grogan, President, The Boston Foundation, Inc.
Guardian Angels Foundation
GuideStar
Gulf Coast Community Foundation of Venice (Flordia)
Walter and Elise Haas Fund
Hands On Network
Erin Hardwick, Executive Director, South Carolina Association of Nonprofit
Organizations
Hazelden Foundation
John R. Healy, Chief Executive Officer, The Atlantic Foundation of New York
Stephen Heintz, President, Rockefeller Brothers Fund
Wade Henderson, Executive Director, Leadership Conference on Civil Rights
F.B. Heron Foundation
William and Flora Hewlett Foundation
Hill House Assoication
Ira Hirschfield, President, Evelyn and Walter Haas, Jr. Fund
Honored to Serve, Inc.
Incarcerated and Homeless Disabled Veterans
In Reach, Inc.
Independent Sector
Indiana Grantmakers Alliance
Institute for Global Ethics
The Interfaith Alliance
International Center for Environmental Arts
Irving Healthcare Foundation
Jewish Communal Fund
Dorothy A. Johnson, President Emeritus, Council of Michigan Foundations
Bobbi Johnson, President & CEO, Goodwill Industries of the Inland Northwest
The Joyce Foundation
Joy of Sports Foundation
JA Worldwide (Junior Achievement) 
KaBOOM!
Kansas Health Foundation
Diane Kaplan, President, Rasmuson Foundation
John S. and James L. Knight Foundation
Knowledge Exchange Center of Rhode Island
The Susan G. Komen Breast Cancer Foundation, Inc.
Ruth I. Kolpin Foundation
Charles W. Lamb, President and CEO, Air Force Village West, Inc.
Land Trust Alliance
Carol S. Larson, President and CEO, The David and Lucile Packard Foundation 
Laurel Foundation
Risa Lavizzo-Mourey, President and CEO, The Robert Wood Johnson Foundation
Thomas Layton, President, Wallace Alexander Gerbode Foundation
Leadership Network of Philadelphia
The Leighty Foundation
Libertae, Inc.
Loaves and Fishes of the Rio Grande Valley, Inc.
Lucent Technologies Foundation
Lutheran Services in America
The John D. and Catherine T. MacArthur Foundation
Maddox Foundation
Manitou Islands Memorial Society
March of Dimes
Marilyn Klenck, President and CEO, Community Foundation Alliance
John E. Marshall, III, President and CEO, The Kresge Foundation
Maryland Association of Nonprofit Organizations
Massachusetts Council of Human Service Providers, Inc.
Matthews Association
Maurice Falk Fund
Katherine Mabis McKenna Foundation
Mental Health Association in Jefferson County (Texas)
Oliver B Merlyn Foundation
Michigan Nonprofit Association
Minnesota Council of Nonprofits
Mississippi Center for Nonprofits
Montana Committee for the Humanities
Montana Nonprofit Association
Monterey Peninsula Foundation
Mortar Board, Inc. & Mortar Board National Foundation
MPA Program in Nonprofit Organizations, High Point University
Ms. Foundation for Women
National 4-H Council
National Architectural Trust
National Association for Visually Handicapped
National Association of Service and Conservation Corps
National Center on Nonprofit Enterprise
National Conference for Community and Justice
National Council of La Raza (NCLR)
National Medical Fellowship
National Multicultural Institute
National Organization for Empowering Caregivers
The Nature Conservancy
Nellie Mae Education Foundation
Paul Nelson, President, Evangelical Council for Financial Accountability
New Hampshire Center for NonProfits
New Hampshire Charitable Foundation
New Hampshire Community Action Association
Nonprofit Coordinating Committee of New York
Non-Profit Leadership League
Nonprofit Finance Fund
Nonprofits' Insurance Alliance of California
North American Family Institute
North Carolina Center for Nonprofits
North Central Texas Community Health Care Center
Northern California Grantmakers
Northern California Presbyterian Homes and Services Foundation
Opportunities Industrialization Center, Inc.
Oral Health America
Pacific Salmon Conservation Foundation
The Peak Center
Peninsula Community Foundation
Pennsylvania Association of Nonprofit Organizations
The Pew Charitable Trusts
PHFE Management Solutions
Philanthropy Northwest
The Dr. P. Phillips Foundation
The Pittsburgh Foundation
The Place of Forsyth County, Inc.
Points of Light Foundation
Vicky Pope, Director of Programs, Nonprofit Leadership League
Preservation Dallas
Profit Solutions, Inc.
Public Agenda
Public Radio International
Rainbow Center, Inc.
Bart Rauluk, Treasurer, Pittsburgh AIDS Task Force
Research!America
Ricardo Millett, President, Woods Fund of Chicago
Sid W. Richardson Foundation
William C. Richardson, President and CEO, W.K. Kellogg Foundation
Ride Connection, Inc.
Riverside Community Health Foundation
Rochester Area Community Foundation
Rochester Grantmakers Forum
The Rockefeller Foundation
Rose Community Foundation
The Rosenberg Foundation
Saint Vincent de Paul Society, Atlanta Council
Seventh-day Adventist Church
The Sierra Club Foundation
The Harry Singer Foundation
The Skillman Foundation
Skoll Foundation
Lorie Slutsky, President, New York Community Trust
The Spencer Foundation
Richard and Susan Smith Family Foundation
Robert G. Smith, President and CEO, Goodwill Industries of Lowers South Carolina
Adam M. Solender, Executive Director, Jewish Federation of Greater Manchester
Sonora Area Foundation
Southern Nazarene University
The Tech Museum of Innovation
Tracy Souza, President, The Cummins Foundation
The Trust for Public Land
Surdna Foundation
Dr. Sayyid M. Syeed, Secretary General, Islamic Society of N. America
Szekely Family Foundation
Take Charge America, Inc.
Texas Nonprofits
Tickets for Kids Foundation
Tides Center
Transatlantic Partners Against AIDS
Transport For Christ, International
Travelers Aid International
United Cerebral Palsy
United Rehabilitation Services
Unitus
United Way of America
Joseph Valentine, Executive Director, Morris Stulsaft Foundation
Valley Care Association
Verizon Foundation
Steve Vetter, President, Eureka Communities
Vision Credit Education, Inc.
Volunteers of America
Waitt Family Foundation
Washington Grantmakers
The Watertown Family YMCA
Wesley Glen Ministries
The Wesley Institute
West Loch Elderly Association
William S. White, President, Charles Stewart Mott Foundation
Timothy E. Wirth, President, United Nations Foundation
Women's Christian Alliance
World Association of Non-Governmental Organizations
Thomas C. Wright Foundation
YMCA of Kings County
YMCA of the Pikes Peak Region, Colorado Spring, Colorado
Raul Yzaguirre, Immediate Past President and CEO, National Council of La Raza
Zellerbach Family Foundation

See also the list of organizations that generally support the Interim Report but have some limited concerns.