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@OpenZeppelin

OpenZeppelin

The standard for secure blockchain applications

Welcome to the OpenZeppelin GitHub 👋

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Explore Popular Repositories


OpenZeppelin Tools

  • Relayer: Infrastructure for relaying transactions on EVM and Non-EVM networks.
  • Monitor: Infrastructure tool for monitoring blockchain events and transactions.
  • UI Builder: Open source tool for creating UI forms for contracts.

Getting Started & Resources

  1. Documentation: learn how to integrate our libraries and tools into your project.
  2. Forum: ask questions, share insights, and get help from our community.
  3. Security Center: all the security details you need to know about OpenZeppelin Contracts
  4. Dune Dashboard: real-time metrics and usage data for OpenZeppelin Contracts across various chains.

Stay Connected

  • X: Follow us for the latest announcements and updates.
  • Blog: Dive deeper into our latest articles, security best practices, and community updates.
  • Careers: Want to buld and secure open-source tools and protocols that protect the open economy? We’re hiring!

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  1. openzeppelin-contracts openzeppelin-contracts Public

    OpenZeppelin Contracts is a library for secure smart contract development.

    Solidity 26.6k 12.2k

  2. openzeppelin-contracts-upgradeable openzeppelin-contracts-upgradeable Public

    Upgradeable variant of OpenZeppelin Contracts, meant for use in upgradeable contracts.

    JavaScript 1.1k 486

  3. openzeppelin-upgrades openzeppelin-upgrades Public

    Plugins for Hardhat and Foundry to deploy and manage upgradeable contracts on Ethereum.

    TypeScript 647 288

  4. ethernaut ethernaut Public

    Web3/Solidity based wargame

    Solidity 2.2k 761

  5. cairo-contracts cairo-contracts Public

    OpenZeppelin Contracts written in Cairo for Starknet, a decentralized ZK Rollup

    Rust 889 392

  6. rust-contracts-stylus rust-contracts-stylus Public

    A library for secure smart contract development written in Rust

    Rust 136 73

Repositories

Showing 10 of 156 repositories
  • openzeppelin-monitor Public

    A blockchain monitoring service that watches for specific on-chain activities and triggers notifications based on configurable conditions.

    OpenZeppelin/openzeppelin-monitor’s past year of commit activity
    Rust 103 AGPL-3.0 27 9 10 Updated Oct 13, 2025
  • openzeppelin-relayer Public

    OpenZeppelin Relayer

    OpenZeppelin/openzeppelin-relayer’s past year of commit activity
    Rust 104 AGPL-3.0 38 5 (2 issues need help) 21 Updated Oct 13, 2025
  • OpenZeppelin/ethernaut-leaderboard’s past year of commit activity
    JavaScript 14 MIT 47 2 4 Updated Oct 13, 2025
  • Event-Scanner Public

    A lightweight highly performant event scanner built in rust

    OpenZeppelin/Event-Scanner’s past year of commit activity
    Rust 4 AGPL-3.0 2 33 3 Updated Oct 13, 2025
  • openzeppelin-confidential-contracts Public

    Solidity library of encrypted contracts using Zama's FHEVM

    OpenZeppelin/openzeppelin-confidential-contracts’s past year of commit activity
    Solidity 114 MIT 23 28 5 Updated Oct 13, 2025
  • openzeppelin-relayer-sdk Public

    OpenZeppelin Relayer SDK

    OpenZeppelin/openzeppelin-relayer-sdk’s past year of commit activity
    TypeScript 10 AGPL-3.0 5 0 10 Updated Oct 13, 2025
  • compact-contracts Public

    OpenZeppelin Contracts written in Compact for Midnight

    OpenZeppelin/compact-contracts’s past year of commit activity
    TypeScript 31 MIT 11 79 10 Updated Oct 13, 2025
  • contracts-wizard Public

    Interactive smart contract generator based on OpenZeppelin Contracts.

    OpenZeppelin/contracts-wizard’s past year of commit activity
    TypeScript 284 AGPL-3.0 177 12 (1 issue needs help) 18 Updated Oct 13, 2025
  • soroban-helpers Public

    A collection of Rust libraries designed to simplify development and testing with Soroban, the smart contract platform for the Stellar network.

    OpenZeppelin/soroban-helpers’s past year of commit activity
    Rust 1 MIT 1 4 3 Updated Oct 13, 2025
  • ui-builder Public

    UI Builder is an open-source blockchain development tool that helps developers and non-developers create user-friendly interfaces for smart contract interaction by providing a chain-agnostic form builder that generates standalone "mini apps" without requiring backend infrastructure.

    OpenZeppelin/ui-builder’s past year of commit activity
    TypeScript 12 AGPL-3.0 4 3 5 Updated Oct 12, 2025