1950 Open source projects that are alternatives of or similar to Web3j

A tool for developing smart contracts. Crafted with the finest cacaos.

Easy-to-use Ethereum Geth wrapper for Android

Cryptographic javascript-functions for ethereum and tutorials to use them with web3js and solidity

Mastering Ethereum, by Andreas M. Antonopoulos, Gavin Wood

A series of notes that were taken during the ConsenSys Academy program.

A browser-based IDE for creating, deploying, and sharing blockchain apps (DApps, or decentralized apps). Publish your first blockchain DApps in 5 minutes! Here is how: https://docs.secondstate.io/buidl-developer-tool/getting-started

gDAI - Gas less DAI transfers by using GSN, Fulcrum and KyberNetwork

精通以太坊 （中文版）

Security analysis tool for EVM bytecode. Supports smart contracts built for Ethereum, Hedera, Quorum, Vechain, Roostock, Tron and other EVM-compatible blockchains.

🌱 Construct Merkle Trees and verify proofs in JavaScript.

An up to date and bare minimum tutorial on deploying smart contracts with python

Takes a link to a smart contract's raw ABI file and an RPC URL and then indexes all instances of that smart contract

Smart Contracts for the Status Contribution Period, along with Genesis and Network Tokens

A resilient Ethereum event listener that bridges your smart contract events and backend microservices

Framework for serverless Decentralized Applications using Ethereum, IPFS and other platforms

An Analysis Tool for Smart Contracts

æternity: solving scalability problems by making sense of state-channels

Code base for "Learn Solidity: Programming Language for Ethereum Smart Contracts" course in Tosh Academy & Blockchain Council

💰 Retail Store that runs on Ethereum

Remix is a browser-based compiler and IDE that enables users to build Ethereum contracts with Solidity language and to debug transactions.

A repo full of smart contracts written in Solidity

General interoperability framework for trustless cross-system interaction

The Language for Smart Legal Contracts

Blockchain Books

🛠️ A smart contract UI for your Ethereum dapp project

The protocol for real-time finance on the Ethereum blockchain

Ethereum smart contracts for security and utility tokens

Hashed Timelock Contracts for ETH, ERC20 and ERC721 on Ethereum

An open-source Crypto-Currency exchange. Peatio v3.0 Coming Soon !

Cryptocurrency study materials resources

Colony Network smart contracts

区块链学习

A starter boilerplate for an Ethereum dapp using web3.js v1.0, truffle, react, and parity

Documentation for Remix IDE

📖 A little book on Ethereum Development with Go (golang)

Hardhat is a development environment to compile, deploy, test, and debug your Ethereum software. Get Solidity stack traces & console.log.

Sharing Updatable Models (SUM) on Blockchain

A guide to smart contract security best practices

Official repository for core projects comprising the Celo platform

Simple example of token market. Based on blockchain technology using Ethereum platform.

Blockchain and Crytocurrency Resources

Run an Ethereum node (Geth or Openethereum) for development

🐦🌴🌴🌴🦕 A home for ethereum smart contracts. 🏠

Example game leaderboard dApp utilizing EbakusDB on Ebakus blockchain

Ethereum smart contracts that have been used during successful ICOs

This has been moved to https://github.com/ethereum/remix-project

An advanced Ethereum mobile wallet

eBitcoin (eBTC) is an ERC20 token. Its primary utility is to provide an easy & fast payment solution. Its edge over other tokens is that it is capable of sending up to 255 payments in a single transaction.

Security Analysis tool for WebAssembly module (wasm) and Blockchain Smart Contracts (BTC/ETH/NEO/EOS)

比特币、以太坊公私钥生成以及签名，长时间不维护可移步 https://github.com/QuincySx/ChainWallet

A secure and decentralized Bitcoin and other cryptocurrency wallet for iPhone. Supports Bitcoin, Ethereum, EOS, Binance Chain, Bitcoin Cash, DASH, ...

The ICO calendar to end all ICO calendars

Directory of security contacts for blockchain companies

Ethereum HD Wallet derivations in Go (golang)

Armors-solidity is a framework to build secure smart contracts on Ethereum.

First version of go-MATRIX, especially for TPS optimization and AI

Tidy up Blockchain ecosystem and tutorial

Combines Hardhat, TypeChain, Ethers, Waffle, Solhint and Solcover.

A ethereum wallet like imToken

A fast and lightweight interactive terminal based UI application for tracking cryptocurrencies 🚀