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The standard for secure blockchain applications


  1. OpenZeppelin Contracts is a library for secure smart contract development.

    JavaScript 15.3k 7.7k

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

    TypeScript 235 113

  3. Assertion library for Ethereum smart contract testing

    JavaScript 298 89

  4. Blockchain educational resources curated by the OpenZeppelin team

    341 76

  5. Web3/Solidity based wargame

    JavaScript 858 250