Blog Post · 9 min read · Updated 2026
Best Grants for Web3 Builders in 2026
9 ecosystem grants worth applying for
Web3 has more grant funding than any other tech sector right now. Most builders don't realize they could fund 6-18 months of work without taking VC money. Here are the 9 grants serious Web3 builders should know — from Ethereum Foundation ESP to Optimism RetroPGF — with honest takes on who each one actually funds.
Who this is for
- Best for
- Protocol devs, infra builders, DeFi, dApps, public goods
- Stage
- Idea-stage to mature open-source teams
- Funding range
- $5K – $500K+ per program
- Time to apply
- 2 hours – 40 hours per program
The grants
Ethereum Foundation ESP
The foundational grant for anything benefiting Ethereum. Protocol research, client implementations, dev tooling, ZK research, account abstraction, security tooling, education. Open inquiry process — start with a 500-1,200 word description, ESP team responds in 1-2 weeks. Strict no-token-launch rule. Funds individuals and teams worldwide.
Optimism RetroPGF
The most generous Web3 grant program in 2026. Retroactive Public Goods Funding — Optimism pays for work already done that benefits their ecosystem. No applications to evaluate; you nominate impactful projects from the last round. Rounds happen 2-3 times per year. Open-source contributors, infra builders, and educators all qualify.
Gitcoin Grants
Quadratic funding rounds where small donations get matched. Strong fit for open-source crypto projects with active communities. Multi-round structure across ETH, Climate, Open Source Software, and Civic categories. Requires community presence to attract donors but rewards genuinely useful public goods.
Solana Foundation Grants
For Solana ecosystem builders — dev tools, infrastructure, dApps, education. Faster review than Ethereum (typically 2-4 weeks). Less strict about commercial structures than EF. Strong fit for builders specifically committed to Solana.
Polkadot Treasury
On-chain treasury voted by DOT holders. Tooling, education, dApps, infrastructure on Polkadot or Kusama. Public proposals via OpenGov, transparent on-chain process. Good fit for teams with existing Polkadot community engagement.
Filecoin Foundation Grants
For decentralized storage, IPFS infrastructure, retrieval markets, and content-addressed systems. Filecoin Devgrants and FilOz also operate. Specialized but generous for the niche. Best for teams working on Filecoin/IPFS specifically.
Arbitrum Foundation Grants
Multi-tier program: STIP (Short-term incentive program) for application-level builders, Long-term incentive grants for infrastructure. Active 2025-2026 with significant treasury deployment. Best fit for L2 builders deploying on Arbitrum.
Protocol Labs RFP Grants
For research and engineering work on IPFS, Filecoin, libp2p, and related protocols. Theme-based RFPs (Requests for Proposals) released periodically. Strong fit for researchers and infra teams aligned with PL's thesis.
NLnet Foundation NGI Zero
For open-source privacy and decentralization projects — many Web3 projects qualify. Tiny application (6 questions), 2-month review cycle, builder-friendly. Permits commercial products as long as funded work is open source. Doesn't accept token-launched projects.
How to actually win Web3 grants
The single biggest mistake Web3 builders make: applying with token-launch plans. Ethereum Foundation, NLnet, and many other ecosystem grants explicitly avoid funding anything that looks like an ICO precursor. Even subtle hints (“and we’ll launch a governance token later”) damage your application.
Second biggest mistake: applying without prior ecosystem contributions. Grant programs want to see you’ve already engaged with the community — open PRs, attended hackathons, published research, contributed to working groups. Pure cold applications from unknown teams face skepticism.
Choosing which grant to target
If your work benefits Ethereum broadly (clients, tooling, research, infra): Ethereum Foundation ESP first, then NLnet NGI Zero as a backup for open-source infrastructure work.
If your work is deployed on a specific L2 or L1: that chain’s foundation grant program. Optimism RetroPGF if you’ve already shipped impactful work; Arbitrum Foundation Grants for proactive proposals.
If your work has strong community engagement: Gitcoin Grants. Their quadratic funding rewards projects with broad small-donor support, so it’s a fit for projects users actively care about.
If you’re a researcher or academic: Protocol Labs RFPs, Ethereum Foundation Academic Grants, or apply through CSF (Crypto Studies Fellowship) programs.
Combined funding potential
A focused Web3 builder can realistically secure $100K-$500K in non-dilutive funding over 6-12 months by combining ESP + NLnet + Gitcoin participation. Top teams have raised $1M+ through multi-program strategies. The key: produce visible open-source output between applications — each successful delivery makes the next grant easier.
Get help drafting your Web3 grant application
AI Drafter generates a tailored ESP, NLnet, or Gitcoin application draft for $35. We've trained it on what these programs actually fund. Free preview first.