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@OpenZeppelin

OpenZeppelin

The standard for secure blockchain applications

Welcome to the OpenZeppelin GitHub 👋

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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 26.8k 12.3k

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

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

    JavaScript 1.1k 493

  3. openzeppelin-upgrades openzeppelin-upgrades Public

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

    TypeScript 647 285

  4. ethernaut ethernaut Public

    Web3/Solidity based wargame

    Solidity 2.3k 771

  5. cairo-contracts cairo-contracts Public

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

    Rust 897 397

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

    A library for secure smart contract development written in Rust

    Rust 141 75

Repositories

Showing 10 of 166 repositories
  • OpenZeppelin/ethernaut-leaderboard’s past year of commit activity
    JavaScript 14 MIT 47 2 4 Updated Dec 10, 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 128 MIT 32 30 9 Updated Dec 9, 2025
  • contracts-sui Public

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

    OpenZeppelin/contracts-sui’s past year of commit activity
    Move 12 MIT 1 73 1 Updated Dec 9, 2025
  • openzeppelin-relayer Public

    OpenZeppelin Relayer

    OpenZeppelin/openzeppelin-relayer’s past year of commit activity
    Rust 111 AGPL-3.0 44 9 (2 issues need help) 19 Updated Dec 9, 2025
  • cairo-contracts Public

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

    OpenZeppelin/cairo-contracts’s past year of commit activity
    Rust 897 MIT 397 43 (1 issue needs help) 10 Updated Dec 9, 2025
  • contracts-wizard Public

    Interactive smart contract generator based on OpenZeppelin Contracts.

    OpenZeppelin/contracts-wizard’s past year of commit activity
    TypeScript 288 AGPL-3.0 182 17 (1 issue needs help) 22 Updated Dec 9, 2025
  • openzeppelin-foundry-upgrades Public

    Foundry library for deploying and managing upgradeable contracts

    OpenZeppelin/openzeppelin-foundry-upgrades’s past year of commit activity
    Solidity 240 MIT 40 12 1 Updated Dec 9, 2025
  • openzeppelin-mcp Public

    Model Context Protocol Servers Repository for OpenZeppelin products

    OpenZeppelin/openzeppelin-mcp’s past year of commit activity
    TypeScript 19 AGPL-3.0 6 3 2 Updated Dec 9, 2025
  • compact-tools Public

    A monorepo for collecting all the shared Compact tools

    OpenZeppelin/compact-tools’s past year of commit activity
    TypeScript 1 MIT 0 9 8 Updated Dec 9, 2025
  • midnight-apps Public

    A collection of starter dapps on Midnight Network

    OpenZeppelin/midnight-apps’s past year of commit activity
    TypeScript 7 MIT 5 37 20 Updated Dec 9, 2025