In Ethereum, the most widely used resource is the , an ample library of contracts ranging from implementations of ERC20 and ERC721 tokens, to many flavors of crowdsale models, to simple behaviors commonly found in contracts, such as , , or . The contracts in this repository have been extensively tested and in some cases even function as de facto standard implementations. They are free to use, and are built and maintained by Zeppelin together with an ever-growing list of external contributors.

The project ethpm aims to organize the various resources that are developing in the ecosystem by providing a package management system. As such, their registry provides more examples for you to browse: