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OpenZeppelin

The standard for secure blockchain applications

Welcome to the OpenZeppelin GitHub 👋

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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 Public

    OpenZeppelin Contracts is a library for secure smart contract development.

    Solidity 25.8k 12k

  2. openzeppelin-contracts-upgradeable Public

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

    JavaScript 1.1k 463

  3. openzeppelin-upgrades Public

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

    TypeScript 643 281

  4. ethernaut Public

    Web3/Solidity based wargame

    Solidity 2.1k 726

  5. cairo-contracts Public

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

    Rust 869 392

  6. rust-contracts-stylus Public

    A library for secure smart contract development written in Rust

    Rust 120 58

Repositories

Showing 10 of 145 repositories
  • openzeppelin-relayer Public

    OpenZeppelin Relayer

    Rust 57 AGPL-3.0 15 2 7 Updated Jun 7, 2025
  • openzeppelin-monitor Public

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

    Rust 57 AGPL-3.0 14 4 12 Updated Jun 7, 2025
  • openzeppelin-contracts-upgradeable Public

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

    JavaScript 1,067 MIT 463 4 7 Updated Jun 6, 2025
  • openzeppelin-contracts Public

    OpenZeppelin Contracts is a library for secure smart contract development.

    Solidity 25,821 MIT 12,044 228 (1 issue needs help) 61 Updated Jun 6, 2025
  • TypeScript 0 MIT 1 3 4 Updated Jun 6, 2025
  • cairo-contracts Public

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

    Rust 869 MIT 392 43 (3 issues need help) 19 Updated Jun 6, 2025
  • openzeppelin-community-contracts Public

    Solidity library of smart contracts from the OpenZeppelin Community

    Solidity 56 MIT 17 6 18 Updated Jun 6, 2025
  • minimal-rollup Public

    A minimal based rollup implementation that is easy to understand and extend

    Solidity 39 MIT 7 14 13 Updated Jun 6, 2025
  • TypeScript 12 MIT 3 0 6 Updated Jun 6, 2025
  • docs-utils Public

    Scripts used for docs previews in pull requests across OpenZeppelin projects

    JavaScript 6 7 0 2 Updated Jun 5, 2025