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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 26.8k 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 772

  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
  • 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 23 AGPL-3.0 7 6 4 Updated Dec 10, 2025
  • OpenZeppelin/ethernaut-leaderboard’s past year of commit activity
    JavaScript 14 MIT 47 2 4 Updated Dec 10, 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 10, 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 10, 2025
  • Event-Scanner Public

    A lightweight highly performant event scanner built in rust

    OpenZeppelin/Event-Scanner’s past year of commit activity
    Rust 9 MIT 4 30 10 Updated Dec 10, 2025
  • openzeppelin-contracts Public

    OpenZeppelin Contracts is a library for secure smart contract development.

    OpenZeppelin/openzeppelin-contracts’s past year of commit activity
    Solidity 26,817 MIT 12,339 240 (1 issue needs help) 69 Updated Dec 10, 2025
  • openzeppelin-contracts-upgradeable Public

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

    OpenZeppelin/openzeppelin-contracts-upgradeable’s past year of commit activity
    JavaScript 1,131 MIT 493 4 3 Updated Dec 10, 2025
  • docs Public

    The new OpenZeppelin Documentation

    OpenZeppelin/docs’s past year of commit activity
    MDX 5 8 2 6 Updated Dec 10, 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 2 Updated Dec 10, 2025
  • 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 647 MIT 285 96 (6 issues need help) 22 Updated Dec 10, 2025