Solidity Projects: 3838+ Open-Source Web3 Examples

Browse 3838+ open-source Solidity Web3 projects from ETHGlobal hackathons. Find production-ready code, learn from winning implementations, and discover inspiration for your next blockchain build.

Solidity is an object-oriented programming language for writing smart contracts on various blockchain platforms, most notably, Ethereum. It's used to implement smart contracts on blockchain platforms.

Showing 3838 projects built with solidity.

ZakoBox/ZakoPako

All-in-one, on-chain, DAO-based and GitHub-integrated fundraising toolkit for open-source dev teams

SolidityReactTypeScriptGraphQLPostgreSQLdefinftdaoinfrastructuregamingsocialprivacy

ETHOnline 2025 • 2025

OPENWAVE

Empowering open-source innovation with crypto bounties for every meaningful contribution.

SolidityReactTypeScriptRustNext.jsdefinftdaoinfrastructuresocialprivacy

ETHOnline 2025 • 2025

ethPulse

Web3.0 decentralized and incentivized polls & surveys to power community-driven decisions.

SolidityReactNext.jsNode.jsdefinftdaoinfrastructuregamingsocial

ETHOnline 2025 • 2025

Mizan

Zero-interest credit for everyone, powered by DeFi liquidity.

SolidityReactTypeScriptdefinftinfrastructure

ETHOnline 2025 • 2025

A3A Protocol

A3A Protocol: secure daily AI-to-AI communication & payments under Web3 for Fiducia Agents

SolidityPythonRustinfrastructureprivacy

ETHOnline 2025 • 2025

StakeVault

Earn 5% APR on staked ETH with instant withdrawals - built with Hardhat v3 for secure DeFi staking.

SolidityTypeScriptRustNode.jsdefiinfrastructureprivacy

ETHOnline 2025 • 2025

CircleSettle

AI-powered bill splitting with on-chain credit scoring. Split fairly, build trust, unlock loans.

SolidityTypeScriptJavaScriptNext.jsdefi

ETHOnline 2025 • 2025

GUIDE2FILM3

AI-powered Web3 guide to blockchain films, funding, and decentralized cinema.

SolidityReactTypeScriptPythonRustNext.jsdefinftinfrastructuresocial

ETHOnline 2025 • 2025

SafeBet

A lossless, transparent prediction market built with Aave, Pyth, Avail, and Blockscout.

SolidityReactdefiinfrastructure

🏆 Most Innovative use of Pyth pull oracle (Price Feeds)2nd place (Pyth)

ETHOnline 2025 • 2025

p2pshop

A peer to peer shop where sellers offer products to sellers in exchange for crypto

SolidityReactTypeScriptgaming

ETHOnline 2025 • 2025

FemPunk: Nushu

To revive intangible heritage - Nushu and to regain women's historical voice through collaboration

SolidityTypeScriptNext.jsPostgreSQLNode.jsnftsocial

ETHOnline 2025 • 2025

BugChan

Bugchan, trustless bug bounties powered by smart contracts, encryption, and reputation.

SolidityReactTypeScriptNext.jsprivacy

🏆 Best use of Autoscout self - service explorer launchpad2nd place (Blockscout)

ETHOnline 2025 • 2025

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