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Organization Location Revenue Expenses Assets Program Fundr. cost Employees Type Follow
Open Contracting Partnership To enable one billion people to live in more equitable, prosperous and sustainable communities by helping… 85-3115306 · FY2024 Washington, DC $7.4M $8.4M $4.1M 92% 0% 8 501(c)(3)
Opencape Corporation Provide 100% fiber optic internet for government organizations, schools, businesses and residents on cape cod… 20-8670761 · FY2024 Barnstable, MA $5.2M $6.1M $22.2M 81% 1% 18 501(c)(3)
Open Imagery Network INC 81-3160991 · FY2024 Washington, DC $4.4M $3.9M $1.7M 93% 1% 501(c)(3)
Open Source Technology Improvement Fund INC Charity for scientific research 47-3897395 · FY2025 Chicago, IL $2.7M $2.4M $419.8K 75% 0% 501(c)(3)
Open Source Robotics Foundation INC To support the development, distribution, and adoption of OPEN SOURCE software for use in ROBOTICS research… 45-5230545 · FY2024 San Jose, CA $2.6M $2.0M $6.5M 96% 0% 501(c)(3)
Chikaming Open Lands Preservation of OPEN space and natural areas. 38-3515636 · FY2024 Sawyer, MI $2.3M $915.7K $10.9M 60% 10% 5 501(c)(3)
Openelis Foundation To develop open source community based solutions and thereby support the informatics needs and best practices… 27-3655875 · FY2025 Jefferson City, MO $1.4M $1.4M $2.1M 83% 0% 3 501(c)(3)
Pattern PATTERN INC. Provides support to central indiana's creative maker industries in the form of business… 47-4197760 · FY2024 Carmel, IN $1.4M $971.9K $816.4K 70% 8% 501(c)(3)
Free Software Foundation INC To promote and defend computer users rights to use, study, copy, and modify the software on their computer… 04-2888848 · FY2023 Boston, MA $1.2M $1.6M $1.4M 85% 6% 14 501(c)(3)
Open Source Initiative Educate the public about OPEN SOURCE software and maintain the OPEN SOURCE definition. 91-2037395 · FY2024 W Hollywood, CA $1.1M $1.0M $970.1K 65% 12% 4 501(c)(3)
C Burr Artz Library Operational support for the C. BURR ARTZ LIBRARY 52-0591537 · FY2024 Frederick, MD $420.7K $132.3K $6.5M 97% 0% 501(c)(3)
Open Source Ecology OSE teaches collaborative design for a transparent and inclusive economy of abundance. We are currently… 45-4997514 · FY2024 Maysville, MO $259.1K $196.1K $507.7K 100% 0% 501(c)(3)
Open Style Lab INC Education on design and disablity programs and educational training and workshops 47-3087599 · FY2024 Great Neck, NY $248.3K $175.7K $158.9K 68% 0% 501(c)(3)
Barefoot Foundation Enabling real-world software engineering experience for under-represented groups 87-2369024 · FY2024 Portland, OR $180.6K $6.3K $632.1K 80% 5% 501(c)(3)
Open Stage Project INC 83-3782341 · FY2024 New York, NY $154.3K $114.9K 501(c)(3)
Project Open INC 13-3744003 · FY2024 New York, NY $150.6K $296.8K 501(c)(3)
Wild Source Foundation 85-0947494 · FY2024 Golden, CO $129.4K $66.9K 501(c)(3)
Gnu Foundation 26-4479083 · FY2025 Delray Beach, FL $118.6K $38.6K 501(c)(3)
Opendoor Womens Recovery Alliance 84-3092407 · FY2025 Columbus, OH $116.6K $96.4K 501(c)(3)
Open Dialogue Foundation INC 88-2217967 · FY2024 Miami, FL $114.0K $5.8K 501(c)(3)
Open Architecture Collaborative INC 81-1270707 · FY2024 Oakland, CA $110.3K $47.8K 501(c)(3)
One Thread Project INC 88-1982104 · FY2024 Lincoln, NE $106.0K $134.2K 501(c)(3)
International Free Expression Project 84-4951534 · FY2024 Pittsburgh, PA $104.9K $47.5K 501(c)(3)
Opensecuritytraining INC 86-1180701 · FY2025 Colesville, MD $102.2K $150.5K 501(c)(3)
Open Arm Foundation Incorporated 26-0511705 · FY2025 Calumet Park, IL $100.0K $95.0K 501(c)(3)
Open INC 13-4235466 · FY2024 Aldie, VA $97.9K $182.7K 501(c)(3)
Open Books INC 26-0782903 · FY2025 Pensacola, FL $95.6K $160.6K 501(c)(3)
Open Scene INC 83-3776540 · FY2025 Winter Park, FL $94.3K $3.6K 501(c)(3)
Open Source Standards Organization INC 99-1896334 · FY2024 Phoenix, AZ $90.0K $90.0K 501(c)(3)
Yet Another Society Support and advancement of the perl and raku programming languages 38-3536536 · FY2024 Covina, CA $86.8K $188.0K $127.7K 81% 2% 501(c)(3)
Open Transit Software Foundation 84-1786969 · FY2025 Seattle, WA $79.9K $60.6K 501(c)(3)
Oss Project INC 82-3552775 · FY2023 Brooklyn, NY $74.5K $11.3K 501(c)(3)
Erlang Ecosystem Foundation INC 83-3185247 · FY2024 Sunnyvale, CA $64.9K $124.9K 501(c)(3)
Open Access 46-3855967 · FY2024 Homewood, IL $64.0K $64.3K 501(c)(3)
Open Fields INC 04-3517955 · FY2024 Dover, MA $61.6K $59.2K 501(c)(3)
Open Book Project 92-1622408 · FY2025 Easley, SC $58.1K $9.1K 501(c)(3)
Openart 85-2283943 · FY2024 Eureka, CA $55.2K $32.3K 501(c)(3)
Eq & Js Foundation 86-3998569 · FY2023 New Oxford, PA $53.5K $0 501(c)(3)
The Open Arts Foundation 86-0956882 · FY2024 Santa Fe, NM $53.3K $73.4K 501(c)(3)
2,046,138
nonprofits
212,946
funders
12,515,252
grants
22,549,931
directors
214,365
service providers
549,896,012
financial lines
Public data from IRS Form 990 e-file & Business Master File. A 990 shows reported financial activity, not measured program outcomes. Assets are from the IRS BMF and may lag the latest filing; fundraising cost is fundraising expenses as a share of total expenses. · philanthropy.org
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