| The Linux Foundation | 501(c)(6) | 2003 | $220.7 million | $224.4 million | 2024-12 |
| Risc-V International Association Verein | 501(c)(6) | 2022 | $8.6 million | $9.1 million | 2024-12 |
| Delaware Innovation Space Inc | 501(c)(3) | 2017 | $7.1 million | $42.1 million | 2025-12 |
| Riverfront Development Corporation of Delaware | 501(c)(3) | 1997 | $6 million | $144.8 million | 2025-06 |
| Wilmington Neighborhood Conservancy Land Bank Corporation | 501(c)(3) | 2016 | $5.9 million | $9.1 million | 2024-12 |
| Linux Foundation Europe | 501(c)(6) | 2024 | $3.3 million | $4.6 million | 2024-12 |
| Delaware Alliance for Nonprofit Advancement Inc | 501(c)(3) | 1987 | $3.2 million | $1.5 million | 2025-12 |
| Delaware Prosperity Partnership Inc | 501(c)(3) | 2017 | $3.2 million | $3.1 million | 2025-12 |
| Community Service Building Corporation | 501(c)(3) | 1995 | $3 million | $33.2 million | 2025-12 |
| Delaware Thoroughbred Horsemens Association Inc | 501(c)(6) | 1991 | $2.8 million | $2.3 million | 2025-12 |
| Spur Impact Association | 501(c)(3) | 2019 | $2.4 million | $131,159 | 2025-09 |
| Joint Development Foundation | 501(c)(6) | 2015 | $1.6 million | $2.5 million | 2024-12 |
| Delaware Bioscience Association Inc | 501(c)(6) | 2006 | $1.5 million | $2.5 million | 2025-12 |
| Decentralized Storage Alliance Association | 501(c)(6) | 2025 | $1.3 million | $944,203 | 2024-12 |
| R Consortium Inc | 501(c)(6) | 2024 | $1.2 million | $1.1 million | 2024-12 |
| New Castle County Board of Realtors Inc | 501(c)(6) | 2003 | $982,448 | $3.9 million | 2025-12 |
| Delaware Community Reinvestment Action Council Inc | 501(c)(3) | 1991 | $900,419 | $1.5 million | 2025-06 |
| Delaware Black Chamber of Commerce Inc | 501(c)(3) | 2021 | $886,794 | $624,474 | 2024-12 |
| Wilmington Renaissance Corporation | 501(c)(3) | 1994 | $859,645 | $2.3 million | 2025-12 |
| Delaware Healthcare Facilities Association | 501(c)(6) | 1999 | $738,336 | $952,655 | 2025-12 |
| Rwbid Management Company | 501(c)(3) | 2001 | $704,457 | $157,807 | 2025-12 |
| Mid-Atlantic Community Partners LLC | 501(c)(3) | 2014 | $692,668 | $15.2 million | 2024-12 |
| Manufacturers and Tent Renters Association Inc | 501(c)(6) | 2005 | $648,682 | $481,971 | 2025-12 |
| Arden Club Inc | 501(c)(3) | 2002 | $505,520 | $1 million | 2025-09 |
| Emerging Enterprise Center Inc | 501(c)(3) | 2013 | $498,769 | $1.5 million | 2024-12 |
| Central Baptist Community Development Corporation | 501(c)(3) | 2010 | $451,452 | $1.8 million | 2025-06 |
| Chris White Community Development Corporation | 501(c)(3) | 2000 | $321,902 | $3.3 million | 2025-12 |
| Working Group On Legal Opinions Foundation | 501(c)(6) | 2014 | $317,075 | $1.3 million | 2025-06 |
| Delaware Business Roundtable Education Committee Inc | 501(c)(3) | 2005 | $286,001 | $712,886 | 2024-12 |
| Bytecode Alliance Foundation | 501(c)(6) | 2023 | $269,793 | $994,032 | 2025-12 |
| Global Ecolabelling Network Inc | 501(c)(3) | 1997 | $253,446 | $530,885 | 2024-12 |
| Delaware Community Development Corporation | 501(c)(3) | 2000 | $232,146 | $71,269 | 2025-06 |
| Community Empowerment Project | 501(c)(3) | 2018 | $210,228 | $28,215 | 2024-12 |
| Openpower Foundation | 501(c)(6) | 2015 | $200,889 | $1.7 million | 2024-12 |
| Nerdit Foundation | 501(c)(3) | 2019 | $199,815 | $96,857 | 2022-11 |
| Northeast Community Development Corporation | 501(c)(3) | 2024 | $174,857 | $132,628 | 2024-12 |
| Wilmington Economic Development Corporation | 501(c)(3) | 1980 | $166,905 | $2.3 million | 2025-06 |
| African-American Postal League United for Success A-Plus | 501(c)(6) | 2004 | $166,469 | $147,678 | 2024-12 |
| Openel Association | 501(c)(6) | 2025 | $140,000 | $135,937 | 2025-09 |
| Alliance Community Foundation Supporting Organization | 501(c)(3) | 2018 | $138,126 | $86,946 | 2024-12 |
| American Small Business Chamber of Commerce Inc | 501(c)(6) | 2005 | $111,115 | $977 | 2025-12 |
| Junior League of Wilmington Inc | 501(c)(3) | 1942 | $103,112 | $1.1 million | 2025-05 |
| Time Dollar Institute Inc | 501(c)(3) | 1996 | $96,499 | $20,743 | 2024-12 |
| Edge for Tomorrow | 501(c)(3) | 2019 | $85,362 | $87,753 | 2025-12 |
| Ikebana Iwaya Fund | 501(c)(3) | 2006 | $69,800 | $428,588 | 2025-12 |
| Action for Delaware S Children Inc | 501(c)(4) | 2019 | $52,810 | $59,402 | 2025-12 |
| Wood Creek Civic Association Inc | 501(c)(4) | 2023 | $45,931 | $94,523 | 2025-12 |
| Love-In-Deed Community Development Corporation | 501(c)(3) | 2015 | $32,728 | $701,334 | 2024-12 |
| Second District Neighborhood Planning Council | 501(c)(3) | 2012 | $31,556 | $364,720 | 2025-12 |
| Eastern Brandywine Hundred Coordinating Council | 501(c)(4) | 2012 | $27,569 | $501,817 | 2025-12 |
| Terminal Properties Exchange Inc | 501(c)(6) | 2003 | $24,992 | $332,630 | 2026-01 |
| Green for the Greater Good | 501(c)(3) | 2024 | $10,096 | $10,053 | 2024-12 |
| Alianza Delaware Inc | 501(c)(3) | 2023 | $1,437 | $3,303 | 2025-12 |
| Trinity Vicinity Neighborhood Association | 501(c)(3) | 2022 | $298 | $2,245 | 2024-06 |
| Wilmington Placemakers Inc | 501(c)(3) | 2016 | $170 | $34,181 | 2024-12 |
| A Jerusalem Innovation Impact Found Ation | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| African Community Connect | 501(c)(3) | 2026 | | | |
| African-American Postal League United for Success A-Plus | 501(c)(6) | 2004 | $0 | $0 | 2024-12 |
| American Alliance of Paralegals Inc | 501(c)(6) | 2012 | $0 | $0 | 2025-12 |
| Ark Enterprises Community Developme NT Corporation | 501(c)(3) | 2026 | | | |
| Association of Practicing Psychologists | 501(c)(6) | 2025 | $0 | $0 | 2025-12 |
| Bancroft Place Maintenance Corporation | 501(c)(4) | 2002 | $0 | $0 | 2026-06 |
| Bayard Square Neighborhood Association | 501(c)(3) | 2024 | | | |
| Business Cultivation Foundation | 501(c)(3) | 2023 | | $13,019 | 2025-06 |
| Cameron D Hamlin Foundation | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Caribbean American Chamber of Commerce of the Northeast Inc | 501(c)(6) | 2025 | $0 | $0 | 2025-09 |
| Centreville Civic Association | 501(c)(4) | 2015 | $0 | $0 | 2024-12 |
| Centro Para El Desarrollo de Samana | 501(c)(3) | 2024 | | | |
| Comraa Commercial Mail Receiving Agent Association Inc | 501(c)(6) | 2025 | $0 | $0 | 2025-12 |
| Connected Communities Incorporated | 501(c)(3) | 2025 | | | |
| Cool Spring Tilton Neighborhood Association | 501(c)(4) | 2009 | $0 | $0 | 2025-09 |
| Corestart Education Inc | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Delaware Africa Chamber of Commerce | 501(c)(3) | 2025 | | | |
| Delaware Association of Physicians of Indian Origin | 501(c)(6) | 2025 | $0 | $0 | 2025-12 |
| Delaware Automotive Service Professionals Inc | 501(c)(6) | 2009 | $0 | $0 | 2025-12 |
| Delaware Hispanic Chamber of Commerce Inc | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Delaware Recreation and Parks Society | 501(c)(3) | 1992 | $0 | $0 | 2025-12 |
| Delta Outreach and Education Center Incorporated | 501(c)(3) | 1998 | $0 | $0 | 2025-06 |
| East Coast Community Economic Development Corporation | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Edgemoor Revitalization Cooperative Inc | 501(c)(3) | 2011 | $0 | $0 | 2025-06 |
| Executive Womens Golf Association Inc | 501(c)(6) | 1997 | $0 | $0 | 2025-12 |
| Fed Fed Delaware Foundation | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| First State Innovation Inc | 501(c)(3) | 2007 | $0 | $400,323 | 2025-12 |
| Founders Legacy Foundation | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Fund for Policy Reform | 501(c)(4) | 2015 | $0 | $3.26 billion | 2024-12 |
| Grain Elevator and Processing Society | 501(c)(6) | 2011 | $0 | $0 | 2025-06 |
| Greater Brandywine Village Revitalization Inc | 501(c)(3) | 2019 | $0 | $0 | 2024-12 |
| Hawks Inc | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Heritage-Grendon Civic Association Inc | 501(c)(4) | 2012 | $0 | $0 | 2025-12 |
| Holiday Hills Civic Association | 501(c)(4) | 2024 | $0 | $0 | 2026-04 |
| International Womens Insolvency and Restructuring Confederation | 501(c)(6) | 2000 | $0 | $0 | 2025-12 |
| Jubilee Community Development Corporation | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Kingswood Community Support Corporation | 501(c)(3) | 2025 | | | |
| Klemsz Foundation | 501(c)(3) | 2014 | | $19,531 | 2024-12 |
| Kohn-Linq Foundation | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Lazarus Educational Services Inc | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Lifelinz | 501(c)(3) | 2016 | $0 | $0 | 2023-02 |
| Midtown Brandywine Neighbors Association | 501(c)(4) | 2011 | $0 | $0 | 2026-06 |
| N U Friendship Outreach | 501(c)(3) | 2008 | $0 | $0 | 2025-12 |
| NKM Consultants Inc | 501(c)(3) | 2025 | $0 | $0 | 2025-06 |
| National Arab American Bar Association | 501(c)(6) | 2024 | $0 | $0 | 2025-12 |
| National Community Corporation | 501(c)(3) | 2015 | $0 | $0 | 2024-12 |
| National Speakers Association | 501(c)(4) | 2024 | $0 | $0 | 2024-12 |
| Northside for Life Inc | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Ny Astrology Institute | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Pak Futures Foundation | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Pay It Forward Networking Group Corporation | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Pramere Events Inc | 501(c)(3) | 2017 | $0 | $0 | 2025-06 |
| Precious Jewels Incorporated | 501(c)(3) | 2024 | $0 | $0 | 2024-09 |
| Project Artemis Inc | 501(c)(6) | 2026 | | | |
| Ring & Scepter Corporation | 501(c)(3) | 2025 | | | |
| Safe United Neighborhoods | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Saving A Place for You Inc | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Shellburne Civic Assoc | 501(c)(4) | 2009 | $0 | $0 | 2026-01 |
| Stephen and Rosamund Forrest Family Foundation | 501(c)(3) | 2014 | | $4 million | 2024-12 |
| Sustainable Impact Fund Inc | 501(c)(3) | 2024 | | | |
| Talley Farms Civic Association Inc | 501(c)(4) | 2013 | $0 | $0 | 2025-09 |
| Tarleton Civic Association | 501(c)(4) | 2020 | $0 | $0 | 2025-09 |
| The Changeover Foundation | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| The Rouse Family Foundation | 501(c)(3) | 2007 | | $3,387 | 2025-12 |
| Triangle Neighborhood Association | 501(c)(4) | 2014 | $0 | $0 | 2025-12 |
| Umuagbavu Diaspora Development Foundation USA Inc | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Under Their Feet Corp | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Union Park Gardens Neighborhood Association | 501(c)(4) | 2025 | $0 | $0 | 2024-09 |
| United States Junior Chamber of Commerce | 501(c)(4) | 1981 | $0 | $0 | 2024-12 |
| Vamos Honduras Inc | 501(c)(3) | 2024 | $0 | $0 | 2025-07 |
| Westbrite Civic Association | 501(c)(4) | 2014 | $0 | $0 | 2025-12 |
| Wilmington Tax Group Inc | 501(c)(6) | 2005 | $0 | $0 | 2024-06 |