Search Results for "contracts"
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Showing 64 open source projects for "contracts"
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OpenZeppelin Contracts
OpenZeppelin Contracts is a library for secure smart contracts
A library for secure smart contract development. Build on a solid foundation of community-vetted code. OpenZeppelin Contracts uses semantic versioning to communicate backward compatibility of its API and storage layout. To keep your system secure, you should always use the installed code as-is, and neither copy-paste it from online sources nor modify it yourself. The library is designed so that only the contracts and functions you use are deployed, so you don't need to worry about it needlessly increasing gas costs. ... -
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Gnosis Safe Contracts
Gnosis Safe allows secure management of blockchain assets
The most trusted platform to manage digital assets on Ethereum. Access the most recent version of the Safe directly in your browser. Download the Safe as a static desktop application for Windows, MacOS or Linux. Conveniently manage your digital assets on the go. Fully customize how you manage your company crypto assets, with the option to require a predefined number of signatures to confirm transactions. Require multiple team members to confirm every transaction in order to execute it, which... -
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Solidity
The Smart Contract Programming Language
Solidity is a statically-typed curly-braces programming language designed for developing smart contracts that run on Ethereum. Solidity 0.8.4 adds custom structured errors, allows more flexible configuration of the SMTChecker and fixes a bug in the Solidity ABI decoder v2. Read more about the bug here. With v0.8.4, errors can be defined inside and outside of contracts (including interfaces and libraries). This provides a convenient and gas-efficient way to explain to users why an operation failed. ... -
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Chainlink
node of the decentralized oracle network
Securely connect smart contracts with off-chain data and services. Chainlink decentralized oracle networks provide tamper-proof inputs, outputs, and computations to support advanced smart contracts on any blockchain. Start building your hybrid smart contract with Chainlink. Use decentralization, trusted nodes, premium data, and cryptographic proofs to connect highly accurate and available data/APIs to any smart contract. -
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Starknet Foundry
Blazing fast toolkit for developing Starknet contracts
Starknet Foundry is a fast development toolkit for building and testing Starknet smart contracts. It is written in Rust and built around native Cairo testing and Starknet-specific execution infrastructure. The project includes snforge for contract testing and sncast for interacting with deployed Starknet contracts from the command line. It is useful for developers who need testing, deployment, transaction handling, chain data access, and contract interaction tools in one workflow. ... -
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Union
Serverless backend platform for Web3-native app development
...It provides a serverless execution layer with built-in authentication, event handling, and state management tailored for decentralized systems. Developers can write backend logic using WebAssembly and deploy logic that interacts with smart contracts and blockchain data without managing infrastructure. -
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Hardhat
Hardhat is a development environment to compile, deploy, test
...Hardhat Runner is the main component you interact with when using Hardhat. It's a flexible and extensible task runner that helps you manage and automate the recurring tasks inherent to developing smart contracts and dApps. Easily deploy your contracts, run tests and debug Solidity code without dealing with live environments. Hardhat Network is a local Ethereum network designed for development. Hardhat is the best choice for Solidity debugging. You get Solidity stack traces, console.log and explicit error messages when transactions fail. -
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Fuels-rs
Fuel Network Rust SDK
fuels-rs is a Rust-native Software Development Kit (SDK) for the Fuel blockchain. It facilitates compilation, deployment, transaction crafting, contract interaction, and testing of Sway smart contracts, as well as launching and controlling local Fuel nodes for development or CI workflows. -
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MultiversX Chain
The official implementation of the MultiversX blockchain protocol
...It implements Adaptive State Sharding and Secure Proof-of-Stake (SPoS) to achieve fast transaction speeds and efficient consensus. This implementation powers the MultiversX mainnet and supports advanced features like smart contracts, meta-transactions, and economic models suited for DeFi and enterprise use. Developers can build dApps using WASM-based smart contracts with performance and scalability in mind. -
$300 Free Credits for Your Google Cloud ProjectsLaunch your next project with $300 in free Google Cloud credits—no strings attached. Test, build, and deploy without risk. Use your credits across the entire Google Cloud platform to find what works best for your needs. After your credits are used, continue with always-free tier services. Only pay when you're ready to scale. Sign up in minutes and start exploring.
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Qtum
Qtum Core Wallet
...There is no voting, master nodes, or minimum amount required. There have been transactions as small as 2 Qtum that have created blocks in the past. Staking from smart contracts is under development. -
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Plutus
The Plutus language implementation and tools
Plutus is the smart contract development framework for the Cardano blockchain, created using Haskell. It provides the core infrastructure for writing, testing, and deploying secure, deterministic smart contracts on the Cardano platform. Plutus includes a custom functional language (Plutus Core), a higher-level embedded DSL (Plutus Tx) for writing contracts in Haskell, and an off-chain infrastructure for managing interactions. It ensures strong correctness guarantees through formal verification and functional programming paradigms. -
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Aeternity node
Scalable blockchain for the people, smart contracts, state channels
Engineered to scale and last, æternity is an easily accessible blockchain platform for the global public. With numerous innovative functionalities and performance far ahead of earlier blockchains, æternity allows its users and community to seamlessly venture into the new era of society, economy, and digital interactions. The æternity blockchain project was born out of a desire for a more fair Internet supported by scalable, open-source and cryptographic software, with a commitment to... -
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Fuels‑TS
Fuel Network Typescript SDK
Fuels‑TS is a TypeScript SDK by FuelLabs for building decentralized applications on the Fuel blockchain. It provides tools for deploying and interacting with Sway smart contracts, managing wallets, crafting transactions, and initializing local development environments. Build forc workspace and generate Typescript types for everything. Built-in CLI for project bootstrap, build, deploy, dev server, and type generation. The primary license for this repo is Apache 2.0. Rich documentation including quickstart guides, cookbook, and API references. -
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Echidna
Ethereum smart contract fuzzer
Echidna is a weird creature that eats bugs and is highly electrosensitive (with apologies to Jacob Stanley) More seriously, Echidna is a Haskell program designed for fuzzing/property-based testing of Ethereum smarts contracts. It uses sophisticated grammar-based fuzzing campaigns based on a contract ABI to falsify user-defined predicates or Solidity assertions. We designed Echidna with modularity in mind, so it can be easily extended to include new mutations or test specific contracts in specific cases. Optional corpus collection, mutation and coverage guidance to find deeper bugs. ... -
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wagmi
React Hooks for Ethereum
wagmi is a collection of React Hooks containing everything you need to start working with Ethereum. wagmi makes it easy to "Connect Wallet," display ENS and balance information, sign messages, interact with contracts, and much more, all with caching, request deduplication, and persistence. We create a wagmi Client and pass it to the WagmiConfig React Context. The client is set up to use the ethers Default Provider and automatically connect to previously connected wallets. Next, we use the useConnect hook to connect an injected wallet (e.g. ... -
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Stacks
The Stacks 2.0 blockchain implementation
Stacks 2.0 is a layer-1 blockchain that connects to Bitcoin for security and enables decentralized apps and predictable smart contracts. Stacks 2.0 implements Proof of Transfer (PoX) mining that anchors to Bitcoin security. Leader election happens at the Bitcoin blockchain and Stacks (STX) miners write new blocks on the separate Stacks blockchain. With PoX there is no need to modify Bitcoin to enable smart contracts and apps around it. Normal releases in this repository that add features such as improved RPC endpoints, improved boot-up time, new event observer fields or event types, etc., are released on a monthly schedule. ... -
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superfluid protocol-monorepo
Superfluid protocol specification, implementations and development kit
...The Superfluid Protocol is a framework that realizes the real-time finance vision where user accounts are connected together, and transactions can happen between user accounts instantaneously as a result. This repository implements the superfluid protocol as Ethereum contracts. It also contains a Javascript SDK for developing Web3 applications using the superfluid protocol. -
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Synthetix
Synthetix Solidity smart contracts
Synthetix is a new financial primitive enabling the creation of synthetic assets, offering unique derivatives and exposure to real-world assets on the blockchain. Leveraging the Synthetix debt pool and our innovative liquidity framework, our traders are guaranteed to have some of the best price execution around, with little to no slippage and fills you can’t get elsewhere. Capture the price movements of popular cryptocurrencies, fiat currencies, stocks, commodities and more with zero... -
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Brownie
A Python-based development and testing framework for smart contracts
Brownie is a Python-based development and testing framework for smart contracts targeting the Ethereum Virtual Machine. Powerful debugging tools, including python-style tracebacks and custom error strings. The recommended way to install Brownie is via pipx. pipx installs Brownie into a virtual environment and makes it available directly from the command-line. Once installed, you will never have to activate a virtual environment prior to using Brownie. -
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Go Ethereum
Go implementation of the Ethereum protocol
Go Ethereum is the Golang implementation of the Ethereum protocol, a decentralized computing platform that runs smart contracts and applications. There are three original implementations of Ethereum and along with C++ and Python, Go Ethereum is one of them, written in Go. Go Ethereum comes with several wrappers/executables. It is fully open source and available as a standalone client called Geth that you can install on just about any operating system, or as a library that you can embed in your Go, Android or iOS projects. -
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Hyperledger Fabric
Distributed ledger framework for developing solutions and applications
...It offers a unique approach to consensus that enables performance at scale while preserving privacy. High-performance, secure, permissioned blockchain network. Code written in Go, chaincode (smart contracts) in Go, Javascript, or Java, SDKs in Node.js, Java, Go, REST and Python. Hyperledger is a collaborative effort created to advance blockchain technology by identifying and addressing important features for a cross-industry open standard for distributed ledger technologies(DLTs) that will transform the way business transactions are conducted globally. ... -
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Mina
Mina is a new cryptocurrency with a constant size blockchain
...But Mina’s zkApps, smart contracts powered by zero-knowledge, keep users in control of their privacy by validating and sharing proofs of their data, rather than the data itself. Think about getting a loan by simply sharing a proof of your personal ID and credit score, rather than the data itself. No risk of your personal information being hacked or sold. You are the only one owning your data, and it never leaves your device. -
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Cardano Node
The core component that is used to participate in a Cardano
Cardano Node is the core software that powers the Cardano blockchain, a decentralized, proof-of-stake platform for smart contracts and digital assets. Developed in Haskell, the node allows participation in Cardano’s network by validating transactions, producing blocks, and maintaining the ledger. It supports Shelley, Goguen, Basho, and other phases of Cardano’s roadmap, and plays a crucial role in network security and consensus. The node is configurable for different use cases, including running full nodes, relay nodes, or stake pool operators. -
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web3.js
Ethereum JavaScript API
web3.js is the Ethereum JavaScript API that connects to the Generic JSON-RPC spec. It is composed of a selection of libraries that make it possible to interact with a local or remote ethereum node, using a HTTP or IPC connection. The node may be local, hosted by the DApp provider, or a public gateway such as Infura, which operates free Ethereum access points. It is necessary to run a local or remote Ethereum node to be able to use this library. web3.js is directly usable on web technology... -
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Web3j
Lightweight Java and Android library for integration with Ethereum
Web3j is a lightweight, highly modular, reactive, type safe Java and Android library for working with Smart Contracts and integrating with Ethereum blockchains. This allows you to work with Ethereum blockchains, without the additional overhead of having to write your own integration code for the platform. Web3j integrates seamlessly with the Epirus Blockchain Explorer. Web3j provides full type-safe access to your blockchain applications. Plugins for leading build tools to simplify the developer experience. ...
