150K+ funder universe. The 25 that move first.

World's largest private foundation. Funds K-12 education reform, global health (vaccines, maternal health), and US economic mobility. Mostly invite-only; open RFPs published periodically.

Assets

$75.2B

Avg grant

$100K–$10M

Largest US philanthropy focused on health. Funds health-equity research, community health interventions, public-health policy. Publishes recurring RFPs.

Assets

$13.6B

Avg grant

$50K–$2M

Funds social justice, inequality reduction, civic engagement, free expression, and creative arts. Mostly invite; LOIs accepted in some programs.

Assets

$16B

Avg grant

$100K–$1M

Big-bet philanthropy on climate solutions, criminal justice reform, nuclear security, and local Chicago programs. Invite + 100&Change open challenge.

Assets

$8.2B

Avg grant

$100K–$5M

Funds informed and engaged communities — local journalism, arts, civic innovation. Open Knight Cities Challenge and Knight News Challenge series.

Assets

$2.6B

Avg grant

$25K–$500K

Funds open educational resources, climate solutions, reproductive rights, cyber policy, and Bay Area performing arts. Invite-only.

Assets

$13.1B

Avg grant

$100K–$1M

Expands opportunities in American cities. Strong arts & culture, climate resilience, and place-based Detroit programs. Open RFPs by program.

Assets

$4.2B

Avg grant

$150K–$1M

Funds civil society, afterschool learning, freshwater conservation, and place-based work in Flint, MI. Accepts LOIs year-round.

Assets

$3.5B

Avg grant

$50K–$500K

Google's philanthropic arm. Funds AI for social good, nonprofit tech adoption, crisis response, and STEM education. Open challenges and AI Impact Accelerator.

Assets

Corporate program

Avg grant

$250K–$25M

Provides cash + Azure/Microsoft 365 credits to nonprofits. AI for Good, Skills for Jobs, Airband (rural broadband). Open application portal.

Assets

Corporate program

Avg grant

Software + cash

Discounted ChatGPT Team/Enterprise and API credits for 501(c)(3) nonprofits. Application-based, rolling.

Assets

Credits program

Avg grant

API credits + discounts

K-12 charter & choice, oceans & freshwater, and Home Region (NW Arkansas, Delta). Mostly invite; some open initiatives.

Assets

$7.2B

Avg grant

$100K–$2M

Children, families, communities; oceans & climate; population & reproductive health. Invite-only for most programs.

Assets

$8.2B

Avg grant

$100K–$1M

Basic science research, environmental conservation, Bay Area patient-care quality. Invite-only with rare RFPs.

Assets

$8.4B

Avg grant

$500K–$5M

STEM research, public understanding of science, economics. Open LOI process — Sloan Research Fellowships annually.

Assets

$2.0B

Avg grant

$50K–$500K

Basic math & physical sciences, autism research (SFARI), life sciences collaborations. Open RFPs and fellowships.

Assets

$5B+

Avg grant

$100K–$5M

Funds biomedical science (cell atlas, rare disease), personalized learning, US justice & opportunity. RFPs published quarterly.

Assets

LLC (no public assets)

Avg grant

$250K–$10M

Evidence-based policy reform. Funds rigorous research, pilots, and advocacy across criminal justice, health-care costs, and education. RFP-driven.

Assets

$2B+

Avg grant

$100K–$3M

Fellowships and competitions for social science researchers across dozens of programs. Open applications.

Assets

Operating

Avg grant

$25K–$100K fellowships

Largest community foundation serving NYC. Open LOIs across health, education, environment, arts, and human justice.

Assets

$3.5B

Avg grant

$25K–$250K

Bay Area-focused community foundation. People, place, and power frame. Cycle-based open grants.

Assets

$1.6B

Avg grant

$25K–$200K

Bridges public-health research with private funding. Partners on disease prevention, health equity, and emergency response.

Assets

Operating

Avg grant

$50K–$2M

Computer science education program. Funds Title I schools, scholarships, and Code.org partnerships. Open application.

Assets

Corporate program

Avg grant

$10K–$100K + scholarships

1-1-1 model — product, equity, and time. Nonprofits get Salesforce CRM + grants for tech-enabled service delivery.

Assets

Corporate 1-1-1

Avg grant

Product + cash

Grassroots environmental activism — small, focused grants for groups protecting land, water, biodiversity, climate.

Assets

Corporate program

Avg grant

$5K–$25K