Skip to content
@OpenZeppelin

OpenZeppelin

The standard for secure blockchain applications

Welcome to the OpenZeppelin GitHub 👋

OpenZeppelin-Banner-DarkLogo

Join our developer community on Telegram!


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!

Pinned Loading

  1. openzeppelin-contracts openzeppelin-contracts Public

    OpenZeppelin Contracts is a library for secure smart contract development.

    Solidity 27k 12.4k

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

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

    JavaScript 1.2k 510

  3. openzeppelin-upgrades openzeppelin-upgrades Public

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

    TypeScript 649 282

  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 910 396

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

    A library for secure smart contract development written in Rust

    Rust 147 78

Repositories

Showing 10 of 174 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 36 AGPL-3.0 12 10 5 Updated Feb 23, 2026
  • OpenZeppelin/ethernaut-leaderboard’s past year of commit activity
    JavaScript 14 MIT 12 2 4 Updated Feb 23, 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 26 MIT 6 76 10 Updated Feb 23, 2026
  • role-manager Public

    Manage OpenZeppelin Access Control contracts across multiple blockchains — visualize roles, permissions, and execute admin actions.

    OpenZeppelin/role-manager’s past year of commit activity
    TypeScript 1 AGPL-3.0 1 0 3 Updated Feb 23, 2026
  • contracts-wizard Public

    Interactive smart contract generator based on OpenZeppelin Contracts.

    OpenZeppelin/contracts-wizard’s past year of commit activity
    TypeScript 292 AGPL-3.0 178 14 (1 issue needs help) 19 Updated Feb 23, 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 144 MIT 39 38 8 Updated Feb 23, 2026
  • openzeppelin-ui Public

    OpenZeppelin UI - React components and utilities for blockchain applications

    OpenZeppelin/openzeppelin-ui’s past year of commit activity
    TypeScript 3 AGPL-3.0 0 0 5 Updated Feb 23, 2026
  • 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 1,154 MIT 510 4 4 Updated Feb 23, 2026
  • openzeppelin-contracts Public

    OpenZeppelin Contracts is a library for secure smart contract development.

    OpenZeppelin/openzeppelin-contracts’s past year of commit activity
    Solidity 26,991 MIT 12,403 245 (3 issues need help) 92 Updated Feb 23, 2026
  • relayer-plugin-x402-facilitator Public

    OpenZeppelin Relayer - x402 Facilitator plugin

    OpenZeppelin/relayer-plugin-x402-facilitator’s past year of commit activity
    TypeScript 0 AGPL-3.0 1 0 7 Updated Feb 23, 2026