| # | Company | Employees |
|---|---|---|
| 1 |
Room to Readroomtoread.org
A non-profit organization focused on promoting education by improving literacy, empowering girls, and providing support to children in low-income communities worldwide |
1,262 |
| 2 |
The Asia Foundationasiafoundation.org
A nonprofit organization focused on improving lives in Asia through initiatives related to governance, women empowerment, economic opportunity, environmental resilience, and international cooperation |
1,153 |
| 3 |
Natural Resourcesnaturalresources-sf.com
Community nonprofit supporting new and expectant families with classes, essential products, and community-building services, including doula trainings and herbal products |
834 |
| 4 |
YMCA of Greater San Franciscoymcasf.org
The organization focuses on youth development, healthy living, and social responsibility by enriching lives through comprehensive programs and services |
830 |
| 5 |
Urban Alchemyurban-alchemy.us
An organization founded to bring peace and respect to chaotic urban areas, empowering former offenders through love and service for community transformation |
619 |
| 6 |
Trust for Public Landtpl.org
National nonprofit connecting communities to outdoor benefits by creating parks, protecting public land, and promoting equitable access, with significant impact since 1972 |
601 |
| 7 |
Catholic Charities SFcatholiccharitiessf.org
Dedicated to serving the vulnerable with 35 programs in the Bay Area, providing holistic solutions and advocating for social justice |
496 |
| 8 |
American Academy of Ophthalmologyaao.org
The world's largest association of eye physicians and surgeons setting standards, advocating for patients, and advancing ophthalmic education and care |
459 |
| 9 | 456 | |
| 10 | 409 | |
| 11 |
Noora Healthnoorahealth.org
This company focuses on supporting patients and caregivers in health systems to provide them with the tools and resources they need |
393 |
| 12 | 393 | |
| 13 |
Taproot Foundationtaprootfoundation.org
A nonprofit organization connecting social change organizations with skilled volunteers for pro bono service to drive collaboration and social change |
375 |
| 14 |
San Francisco SPCAsfspca.org
The organization in San Francisco is dedicated to rescuing animals, preventing cruelty, and finding homes for cats and dogs in need through compassion and expertise |
361 |
| 15 | 358 | |
| 16 |
Brilliant Cornersbrilliantcorners.org
Providing innovative housing and services for vulnerable individuals in California, focusing on those transitioning from homelessness or institutionalization with personalized support |
349 |
| 17 |
Juma Venturesjuma.org
Empowering young people in America by providing opportunities for work, education, and financial capability to break the cycle of poverty |
326 |
| 18 |
Impact Waterimpactwater.foundation
A social business providing water purification systems and maintenance to schools and healthcare centers in Africa to ensure safe drinking water access |
272 |
| 19 |
Swords to Plowsharesswords-to-plowshares.org
Provides direct services, housing, employment assistance, legal support, and veteran policy advocacy for low-income, homeless, and at-risk San Francisco Bay Area veterans |
262 |
| 20 |
Boys & Girls Clubs of San Franciscokidsclub.org
A community-based organization in San Francisco offering high-quality programs for at-risk youth, focusing on youth development, leadership, and creating growth opportunities |
249 |
| 21 |
SF-Marin Food Banksfmfoodbank.org
This organization in San Francisco and Marin works to end hunger by providing nutritious food and empowering neighbors in need |
229 |
| 22 |
KickStart Internationalkickstart.org
KickStart empowers smallholder farmers in Sub-Saharan Africa with affordable irrigation tools, enabling year-round crop growth, increased income, and improved quality of life |
185 |
| 23 |
Self-Help for the Elderlyselfhelpelderly.org
A non-profit organization providing health care, social services, and job training programs to multicultural seniors and disabled adults in the Bay Area |
183 |
| 24 |
Young Community Developersycdjobs.org
Established in 1973, this 501c organization in San Francisco offers training and support for residents in Bayview Hunters Point, focusing on employment and education opportunities |
174 |
| 25 |
Wu Yee Children's Serviceswuyee.org
A San Francisco agency providing child care, public benefit access, community connections, and support to families and children to lift them out of poverty |
171 |
| 26 |
Digital Greendigitalgreen.org
Global development organization empowering farmers with technology, data, and community-driven solutions for prosperous, sustainable livelihoods with a focus on nutrition and climate resilience |
169 |
| 27 |
Enterprise for Youthenterpriseforyouth.org
Empowering young people to prepare for and discover career opportunities through training, guidance, and employment experiences in diverse environments |
169 |
| 28 |
CrowdDoingcrowddoing.world
A platform for global multi-disciplinary volunteering, micro-leadership, and service learning to address social, economic, and environmental challenges through systemic change and social innovation |
168 |
| 29 |
Global Fund for Womenglobalfundforwomen.org
A global organization funding gender justice movements, supporting women's rights organizations worldwide, striving for equity and equality for all |
168 |
| 30 |
826 Valencia826valencia.org
A nonprofit supporting students aged 6-18 with writing skills, helping teachers inspire students to write, founded by Dave Eggers and Ninive Calegari |
168 |
| 31 |
Jewish Federation Bay Areajewishfed.org
This organization operates as a community foundation promoting philanthropy, grantmaking, impact lending, and advocacy to strengthen Jewish communities locally and globally |
167 |
| 32 |
Fast Forwardffwd.org
Fast Forward bridges tech and nonprofit sectors to help startups use technology to solve social problems and scale their impact |
162 |
| 33 |
LightHouse for the Blind and Visually Impairedlighthouse-sf.org
A San Francisco organization empowers blind and visually impaired individuals through skills training, services, technology development, innovation, and advocacy globally |
161 |
| 34 |
Children's Council of San Franciscochildrenscouncil.org
Advocates for quality early care and education, empowers families with support, and builds educator capabilities to help children thrive in San Francisco |
158 |
| 35 |
MNC Inspiring Successmncsf.org
Non-profit organization in San Francisco offering culturally sensitive services for low-income families, focusing on education, leadership development, and community-building initiatives |
157 |
| 36 |
Mission Graduatesmissiongraduates.org
A nonprofit in San Francisco's Mission District helps students prepare for and complete college, creating a community where everyone can pursue educational pathways |
157 |
| 37 |
New Door Venturesnewdoor.org
The company provides opportunities for disadvantaged youth to connect to work and education through paid jobs, skills training, and support services |
156 |
| 38 |
Callistoprojectcallisto.org
A growing non-profit creates technology to detect repeat sexual assailants, supporting college campuses and increasing reporting and resource connection |
38 |
Turn this list into pipeline
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 10, 2026.
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- Financial Services companies in San Francisco 121
- IT Services and IT Consulting companies in San Francisco 96
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The same list elsewhere in United States
- Non-profit Organizations companies in the United States 1,967
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- Non-profit Organizations companies in Washington 143
- Non-profit Organizations companies in Chicago 65
- Non-profit Organizations companies in Los Angeles 41
- Non-profit Organizations companies in Boston 36
- Non-profit Organizations companies in Indianapolis 30
- Non-profit Organizations companies in Atlanta 27