Ethereum Foundation Ecosystem Support Program (ESP)

Open all year Ethereum Foundation Switzerland

Grant

Amount set per project (paid in ETH)

Apply on the official site

What it funds: Grants for open-source work that strengthens the Ethereum ecosystem
Who can apply: Work must be open source and benefit Ethereum
Companies may apply if the funded work is open source
Individuals and teams welcome
When you can apply: Open all year
How to apply: Apply on the ESP applicant portal against a wishlist item, an RFP or as an open proposal
Best for: Idea, Prototype, Early revenue stage
Sectors: Web3 Developer Tools
Run by: International programmes

FLOSS/fundUp to USD 100,000 a year per project (from USD 10,000) Open all year
FOSS United Grants₹1 lakh to ₹8 lakh for projects (past grants) Open all year
Open Technology Fund: Internet Freedom FundUSD 10,000 to USD 900,000 for up to 24 months Open all year
Sovereign Tech FundWork worth more than EUR 50,000; amount set per project Open all year
UNICEF Venture FundUp to USD 100,000 Open all year
Arbitrum Audit ProgramAmount set per project (USD 10 million pool in ARB over 12 months) Open all year
Unity for Humanity GrantShare of a US$600,000 pool (2026 round) Closed

Starter opens 30 grants in full. Pro opens every one.