Top 271 web3 open source projects

🕶 A high-level overview of the EVM security ecosystem

🔌 TypeScript bindings for Ethereum smart contracts

The dApp hub for blockchains of the future

🖼🎑🌠 A utility to fetch and easily display Ethereum & Solana NFTs in a common format given any wallet

Quorum.js is an extension to web3.js providing support for JP Morgan's Quorum API

Type-safe, lightweight SDKs for Ethereum smart contracts

CLI to sync transactions and Truffle artifacts with Ethernal.

🧃 An app for using the JBX protocol.

A complete template for 2022 focused on around React, Postgres and various web3 integrations. You can use the template to make a website, a web application, a hybrid decentralized web application, or even a DAO.

Compile solidity-code faster, easier and more reliable

Distributing POAPs to DAOs in discord, twitter, and more.

Firestore based service of polling eth status and resending tx

💸 Web3 Payments with any token. DePay simplifies and improves Web3 Payments with the power of DeFi. Accept any token with on-the-fly conversion with state-of-the-art widgets.

A web3 provider for Ledger hardware wallets

CLI application for verifying Solidity contracts on Etherscan

Hive API server (offloads most API calls from hived) implemented using Python+SQL

Drop-in web3 solution for single-page Ethereum dApps

The Web3 Gateway for the Oasis Emerald ParaTime.

Paper and implementation of blockchain attestations

A simple, dependency minimized package for building modern dApps with Svelte

The smart contract development tool for Pythonistas, Data Scientists, and Security Professionals

A collection of data models used by Ceramic applications

OpenST Platform provides an interface to tokenise mainstream consumer applications with crypto-assets on Ethereum [deprecated in favour of openst.js and mosaic.js]

Drop-in Access Control via NFT Ownership

🗓 Clone eventbrite on Ethereum, built in Solidity, TruffleJS, Web3js and React/Redux.

Small app for huge community growth

Contracts for Swap, Swear and Swindle. Swap is a protocol for p2p accounting. This is the basis for Swarm’s incentivization model.

How to create your own NFT and mint NFT token

CLI and Node.js library for Ethereum HD Wallet derivations from mnemonic

Javascript library to accept ethereum payments on any website

Making sense of web3 & crypto. Introduction to key concepts and ideas. Rigorous, constructive analysis of key claims pro and con. A look at the deeper hopes and aspirations.

一个很受欢迎的用java和android app类库web3j开发区块链以太坊dapp和智能合约的教程。内容涉及以太坊核心概念，如账户管理、状态与交易、合约开发与交互、过滤器和事件等，也详细说明如何用web3j开发接口与以太坊交互。

This is a code repository for the corresponding video tutorial. In this video, we're going to build a Web 3.0 React Solidity Blockchain Application

Implements proof of historical data possession on the Ethereum blockchain

The Graph Hub is a free, open-source and community-driven knowledge base and documentation initiative on The Graph Protocol. The vision of The Graph Academy is to establish a single go-to-resource for essential information about The Graph Protocol.

100 Days of Ðapps

Tiny libraries for building the next generation of Stacks apps.

Comprehensive EVM SDK (ex: Ethereum, Binance Smart Chain) for iOS, implemented on Swift. Create wallets, watch wallets (read-only), sync transactions, filter transactions by type (erc20, bep20, swap transactions etc.), swap using native DEX protocols, easily extendable to work with custom smart contracts, and full support for EIP1159.

Capability-based security protocol for smart contracts

Genesis is an end-to-end development sandbox and testing platform for Web3 and blockchain-based distributed systems.

🤖 multichain trading bot with sniper, frontrun, backrun, sandwich

Laravel SDK wrapper for the Web3 PHP API client that interacts with the Ethereum blockchain.

Common methods to interact with the Circles ecosystem

Opinionated Dapp Starter Template

Stamp your code with a trackable digital copyright

🔌 Ethereum Dapp Basic Typescript Starter

This is an arbitrage bot that uses existing price aggregators such as 1inch, Paraswap, dex.ag, matcha and more to get the best exchange rates across different decentralized exchanges on different blockchains and ecosystems.

A Universal Ethereum Provider Client

Glosseta is an open-source glossary meant to help people explore and learn the terminology behind web3

Matic network mainnet v1 launch

⚛️Vortex Components is a collection of React Components that helps developers build Ethereum Dapps powered by the Vortex Redux Store.

The platform that MetaGame will be played on aka MetaOS - an open source framework for running decentralized societies. Currently featuring MetaSys, MyMeta Profiles, Dashboard, MetaMenu & Quests

IPFS Blog & News

The protocol for EVENTs and TICKETs

Common useful JavaScript snippets for geth

Pluggable auth infrastructure for Web3 wallets and dapps

Encrypted peer-to-peer system for data security. Own data, own privacy. (Rust+Flutter)

USENET-inspired, uncensorable, decentralized internet discussion system running on IPFS & OrbitDB

Ether-SWR is a React hook that fetches Ethereum data. It streamlines the chores to keep the internal state of the Decentralized App (DApp), batches the RPC calls to an Ethereum node and cache the responses

The first-ever coworking metaverse