110 Open Source Solidity Contracts Software Projects

⟠ A curated list of awesome Solidity resources, libraries, tools and more

Ethereum smart contracts for security and utility tokens

Colony Network smart contracts

Visual Studio Code language support extension for Solidity smart contracts in Ethereum

A list of links to articles, tutorials and papers that are helpful for people developing on the ethereum stack

(Aragon 1) Aragon apps developed by Aragon Core Devs (smart contracts + webapps)

Solidity Compiler for Solana, Substrate, and ewasm

Official Ethereum Studio project repository. And IDE specially tailored to make it as simple as possible to onboard new users into the Ethereum ecosystem

Seriality is a library for serializing and de-serializing all the Solidity types in a very efficient way which mostly written in solidity-assembly

💧 Integration of SEAs, DID and OceanToken in Solidity

Integrated Ethereum implementation and tool suite focused on Solidity testing and development.

📝 Patterns found in smart contract oriented language Solidity.

BokkyPooBah's Token Teleportation Service Smart Contract

📦 Resources for the Ethereum Smart Contract Development tutorial series.

MOVED TO http://github.com/adexnetwork/adex-protocol-eth

Contracts for FundRequest (platform, token, crowdsale)

A blockchain protocol for tokenized hedge funds

web3j Maven plugin

Voting DApp using Web3, Solidity, Hyperledger Fabric and Chaincode EVM

DOCK ERC20 Ethereum contract

The road so far on Udacity Blockchain Developer Nanodegree

A decentralized e-commerce platform! Tech Stack: Ethereum (Solidity) on the backend, Web3 binding to ReactJS frontend!

🔐 Ethereum smart contracts developed for the Hanzo Platform.

Starter project for developing Ethereum smart contracts with Solidity, Truffle and Node.js as a backend server.

Boilerplate for your next Smart Contract, made simple.

Ethereum contract ABI to gRPC protobuf IDL transpiler

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

A tool to generate the grpc server code for a contract

A blockchain based KYC registry prototype

以太坊区块链上永存的留言 🚴‍♂️🍜🦉

Smart contracts and high level API powering the Agreements Network

a framework for developing ethereum smart contracts

A super simple Solidity test harness for Ethereum smart-contracts.

sample project that illustrates how to create and deploy smart contracts, smart wallets, send transactions and observe processed transactions in ethereum using web3j, blockchain, solidity and spring boot

New version of POA Network consensus contracts is here: https://github.com/poanetwork/poa-network-consensus-contracts

Token Website

🔮 Very Simple ERC-721 Smart Contract Template to create your own ERC-721 Tokens on the Ethereum Blockchain, with many customizable Options 🔮

A Medical Record System smart contract for hospitals and patients.

Smart Contracts Design Patterns in the Ethereum Ecosystem and Solidity Code

ERC721 token with ERC20 adapter

🔥 🌈 Bridge between Solidity Contracts and Kotlin

Smart contracts & tools for Arianee Protocol

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

Dexpay: POS, a modularized and extensible point of sale which enables Merchants to accept payments in ETH, DAI and xDAI.

Learn Solidity Step by Step

protobuf3 compiler plugin for solidity and protobufjs integration support

Iterable maps library for Ethereum Solidity

Augmint Web Frontend

NoFilter is a censorship resistant sharing tool which uses IPFS and the Ethereum Blockchain to allow information to be freely shared.

ERC20-compatible Option Contracts

Verify Solidity smart contracts on Etherscan

Bitbrackets Smart Contracts

Source code for my Udemy Ethereum training course

A truffle box that comes with everything you need to start using smart contracts from a Vue App, with Bootstrap styling and components. Supporting frameworks include Vuex, Vue-Router, Bootstrap 4 (via Bootstrap-Vue), and webpack. The sample uses webpack-dev-server for hot-reloading or you can build and serve from Express.

First place for early developers to learn Solidity

My Solidity contracts (simple ones that don't need a separate repo)

Swapping of tokens from Waves to Ethereum and back

Pangea Arbitration Token (PAT) Ethereum Contract

Energy Use Case Smart Contracts of Lition Trading Platform

Verifying merkle multiproofs in solidity example

A control-flow graph builder for Solidity smart contracts.

A collection of solidity contracts found on Github

[DEPRECATED] - New home: https://github.com/bZxNetwork/bZx-monorepo/tree/master/packages/contracts

A solidity documentation generator, based in NatSpec format. :page_with_curl: with standalone HTML, pdf, gitbook and docsify output :pencil2: just plug and play.

Fully collateralised vanilla and bounded (capped call and floored put) crypto options

Certified Smart Contract Audits (Ethereum, Hyperledger, xDAI, Huobi ECO Chain, Binance Smart Chain, Fantom, EOS, Tezos) by Chainsulting

Uniswap flash swap arbitrage solidity contracts

Bringing Ethereum Virtual Machine to StarkNet at warp speed!

Defi flashloan / Arbitrage

Best resources for Solidity gas optimizations ⛽

:tractor: :ear_of_rice: A DeFi app, which provides staking & farming functions are deploy-able with a website, for yield farming.

Smart contracts implementing Boson Protocol on Ethereum.

A supplychain smart contract written in Solidity and deployed on the Rinkeby test network.

a safety verifier for Solidity smart contracts

Projects of Udacity Blockchain Developer Nanodegree

Smart contracts of 1Pool finance reward strategy on ethereum mainnet . https://1pool.finance

Merkle-based payout aggregation

A simple E-voting Decentralised App using the Ethereum Blockchain, Solidity and the MERN(MongoDB, Express.js, ReactJS, Node.js) stack

📝 Very Simple ERC-20 Smart Contract Template to create your own Cryptocurrency on the Ethereum Blockchain, with many customizable Options 📝

JiuZhou is a data set of Ethereum bug smart contracts (ICSME 2020).

Simple Dapp and Vuejs app to manage payments in ether

Good Ghosting V1 Contracts

Hegic v888.0.1 beta contracts (WIP)

The Value Instrument Alpha Prototype

Different types of ERC20 Tokens

An ERC-20 Token ICO Sale

The Earth is flat but Solidity source code is not. This fixes that.

Code base for "How to Build Decentralized Democracy DAO App in Ethereum Blockchain" course in Tosh Academy & Blockchain Council

NFT registry and account wrapper

A Decentralized Lead Sharing Network​

Sample fixed supply token contract on ERC20 standard.

It is a completely decentralized electronic voting system using ethereum blockchain also known as E-voting dApp.

Augmint Solidity Contracts

Crypto arbitrage bot that searches for a significant difference in crypto prices on a number of exchanges and will execute the simultaneous buying and selling of said crypto through a flash loan provided by the AAVE Flash Loan Smart Contract V2.

An opinionated web3 starter for building dApps

Solidity Cookbook - Examples on how to code smart contracts for Ethereum.