
OpenZeppelin
OpenZeppelin Contracts is an open library for smart contract development.

What is OpenZeppelin?
Provided through a stable API, OpenZeppelin Contracts provides an interface for developers to build Solidity and Cairo smart contracts. Developers can leverage secure practices to build ERC20, ERC721, ERC1155, Governor, and custom smart contracts through interactive wizard tools or with Remix. More than 30k developers follow and use OpenZeppelin's tools and libraries to build Web3 apps.
Web3 dapps and developer tools related to OpenZeppelin
Discover blockchain applications that are frequently used with OpenZeppelin.
Developer resources from Alchemy

The 6 best Solidity IDEs for developers (2026)
Explore the best IDEs for Solidity development.

Inside Alchemy's enterprise-grade security infrastructure
When enterprises evaluate blockchain providers, security is paramount. Here's how our security team—built from experts at major banks, federal agencies, and leading cloud providers—delivers infrastructure that meets enterprise standards.

Metropolis makes it easy to deploy smart contracts using Alchemy's account abstraction infrastructure
Learn how Metropolis is leveraging Alchemy's account abstraction infrastructure to redefine smart contract deployment with their new product, Metal.
OpenZeppelin alternatives
Explore web3 competitors and apps like OpenZeppelin.
App store listings are independently reviewed and written by Alchemy using a combination of inbound submissions, editorial research, public project sources, and third-party directories, including ecosystem data from The Grid under the Open Database License, DefiLlama, DappRadar, Reown, and chain ecosystem pages.

