OpenZeppelin

    OpenZeppelin/openzeppelin-contracts

    OpenZeppelin Contracts is a library for secure smart contract development.

    27.4K stars
    12.4K forks
    634 GitHub watchers
    Updated Nov 9, 2026
    View on GitHub

    Build with Backblaze B2

    SDKs, agent skills, IDE extensions, and reference pipelines from Backblaze Labs. All open source.

    Explore Backblaze Labs

    Loading star history...

    Where it stands

    Rank, growth pace and release cadence relative to everything GStars tracks.

    No releases in the last 90 days; the most recent was 103 days ago, with 435 contributors on GitHub.

    Peaked at #85 in the weekly ranking the week of Sep 28, its best in the past year.

    Use Cases & Benefits

    • Provides a library of secure, community-vetted smart contract components for Ethereum and EVM-compatible blockchains.
    • Ensures security and reliability through well-audited, reusable Solidity contracts following industry standards.
    • Use for implementing standard token contracts like ERC20 and ERC721 in decentralized applications.
    • Use for managing role-based access control and permissions within smart contract systems.
    • Use for building complex decentralized systems with reusable utilities like signature verification and safe math.

    Should you depend on it?

    License terms, project hygiene and risks, from GitHub metadata and GStars' snapshots.

    License

    MIT

    Permissive: commercial use, modification and redistribution are allowed with attribution.

    Community files

    • README: present
    • Contributing guide: present
    • Code of conduct: present

    Watch-outs

    No watch-outs from GStars' checks.

    General guidance from repository metadata, not legal advice. How we score

    From the README

    A library for secure smart contract development. Build on a solid foundation of community-vetted code.

    :mage: Not sure how to get started? Check out Contracts Wizard — an interactive smart contract generator.

    :building_construction: Want to scale your decentralized application? Check out OpenZeppelin Defender — a mission-critical developer security platform to code, audit, deploy, monitor, and operate with confidence.

    Excerpt from the OpenZeppelin/openzeppelin-contracts README on GitHub (MIT license). © its authors.Read the full README on GitHub

    Daily snapshots

    Stars gained per day, and how forks and open issues moved, from GStars' daily snapshots

    Forks

    12.4K+14

    Open issues

    344-19

    Compared with peers in Blockchain

    Fastest-growing repositories GStars tracks in this cohort for the week of Nov 8, by 7-day star growth

    OpenZeppelin/openzeppelin-contracts compared with Blockchain repositories by stars, 7-day star growth, health score and last release
    RepositoryStars+7dHealthLast release
    ethereum/go-ethereum51.5K—5911 days ago
    linera-io/linera-protocol32.0K—5757 days ago
    OpenZeppelin/openzeppelin-contracts27.4K—59103 days ago
    hummingbot/hummingbot21.1K—6248 days ago
    ethereum/EIPs14.1K—40—
    spesmilo/electrum8.7K—35—
    Category median21.1K—57—

    Discover Repositories

    Search across tracked repositories by name or description