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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

  • Telegram: Join our community of developers and 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 26.9k 12.4k

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

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

    JavaScript 1.1k 503

  3. openzeppelin-upgrades openzeppelin-upgrades Public

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

    TypeScript 648 287

  4. ethernaut ethernaut Public

    Web3/Solidity based wargame

    Solidity 2.3k 778

  5. cairo-contracts cairo-contracts Public

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

    Rust 902 396

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

    A library for secure smart contract development written in Rust

    Rust 144 77

Repositories

Showing 10 of 169 repositories
  • OpenZeppelin/ethernaut-leaderboard’s past year of commit activity
    JavaScript 14 MIT 47 2 4 Updated Jan 8, 2026
  • contracts-wizard Public

    Interactive smart contract generator based on OpenZeppelin Contracts.

    OpenZeppelin/contracts-wizard’s past year of commit activity
    TypeScript 292 AGPL-3.0 185 16 (1 issue needs help) 22 Updated Jan 8, 2026
  • openzeppelin-upgrades Public

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

    OpenZeppelin/openzeppelin-upgrades’s past year of commit activity
    TypeScript 648 MIT 287 96 (6 issues need help) 24 Updated Jan 8, 2026
  • solidity-docgen Public

    Documentation generator for Solidity projects

    OpenZeppelin/solidity-docgen’s past year of commit activity
    TypeScript 464 MIT 117 35 4 Updated Jan 8, 2026
  • contracts-sui Public

    OpenZeppelin's secure and reusable contracts for the Sui Move ecosystem.

    OpenZeppelin/contracts-sui’s past year of commit activity
    Move 16 MIT 3 72 2 Updated Jan 8, 2026
  • 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 26 AGPL-3.0 10 6 3 Updated Jan 8, 2026
  • OpenZeppelin/openzeppelin-sui-marketplace’s past year of commit activity
    TypeScript 0 MIT 0 0 0 Updated Jan 8, 2026
  • openzeppelin-confidential-contracts Public

    Solidity library of encrypted contracts using Zama's FHEVM

    OpenZeppelin/openzeppelin-confidential-contracts’s past year of commit activity
    Solidity 135 MIT 34 32 7 Updated Jan 8, 2026
  • ethernaut Public

    Web3/Solidity based wargame

    OpenZeppelin/ethernaut’s past year of commit activity
    Solidity 2,265 AGPL-3.0 778 29 29 Updated Jan 8, 2026
  • OpenZeppelin/openzeppelin-transpiler’s past year of commit activity
    TypeScript 22 MIT 15 9 9 Updated Jan 8, 2026