OpenZeppelin Contracts
OpenZeppelinBest for Standard Solidity token and access-control contracts
- Chains
Ethereum Any EVM chain (no specific chain named)- Price
- Free (open source)
- License
- MIT
The standard library of reusable Solidity contracts: ERC-20, 721 and 1155 tokens, access control and utilities. Free and MIT-licensed. Written for Ethereum and any EVM chain. OpenZeppelin also publishes a separate Soroban library for Stellar.