OpenZeppelin

OpenZeppelin is a blockchain security company that provides open-source smart contract libraries, security audits, and developer tools to build and operate secure decentralized applications. Its widely used OpenZeppelin Contracts library, auditing and advisory services, and products like Defender help teams prevent vulnerabilities, automate security operations, and respond to incidents. Combining developer-friendly APIs, best-practice security patterns, and expert consulting, OpenZeppelin positions itself as the standard for secure blockchain applications.