OpenZeppelin provides a suite of open-source tools and services for building secure smart contracts and decentralized applications (dApps) on blockchain platforms. Their offerings include the OpenZeppelin SDK, which streamlines the development of upgradeable smart contracts, allowing developers to deploy and manage contract projects efficiently. OpenZeppelin is renowned for its comprehensive library of audited and secure smart contract templates, enhancing security and reliability in blockchain development. Through their educational resources and community engagement, OpenZeppelin promotes best practices and innovations in the blockchain ecosystem.